| dehydroretinol | (noun) a viscous alcohol that is less active in mammals than is vitamin A1 | Synonyms: vitamin A2 |
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| delightful | (adjective) greatly pleasing or entertaining | Synonyms: delicious |
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| dell | (noun) a small wooded hollow | Synonyms: dingle |
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| delusional | (adjective) suffering from or characterized by delusions | - |
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| demagogical | (adjective) characteristic of or resembling a demagogue | Synonyms: demagogic |
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| demoniacal | (adjective) of, pertaining to, or like a demon or possession by a demon | Synonyms: demoniac, possessed |
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| demurral | (noun) (law) a formal objection to an opponent's pleadings | Synonyms: demur, demurrer |
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| dendroidal | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, tree-shaped, treelike |
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| denial | (noun) a defendant's answer or plea denying the truth of the charges against him | Synonyms: defence, defense, demurrer |
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| (noun) renunciation of your own interests in favor of the interests of others | Synonyms: abnegation, self-abnegation, self-denial, self-renunciation |
| (noun) the act of refusing to comply (as with a request) | - |
| (noun) the act of asserting that something alleged is not true | Synonyms: disaffirmation |
| (noun) (psychiatry) a defense mechanism that denies painful thoughts | - |
| denominational | (adjective) adhering or confined to a particular sect or denomination | - |
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| (adjective) relating to or characteristic of a particular religious denomination | - |
| (adjective) relating to the face value of a banknote, coin, or stamp | - |
| dental | (adjective) of or relating to the teeth | - |
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| (adjective) of or relating to dentistry | - |
| (noun) a consonant articulated with the tip of the tongue near the gum ridge | Synonyms: alveolar, alveolar consonant, dental consonant |
| departmental | (adjective) of or relating to a department | - |
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| derail | (verb) run off or leave the rails | Synonyms: jump |
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| (verb) cause to run off the tracks | - |
| derivational | (adjective) characterized by inflections indicating a semantic relation between a word and its base | - |
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| dermal | (adjective) of or relating to or located in the dermis | Synonyms: dermic |
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| (adjective) of or relating to a cuticle or cuticula | Synonyms: cuticular, epidermal, epidermic |
| (adjective) relating to or existing on or affecting the skin | Synonyms: cutaneal, cutaneous |
| dermatological | (adjective) of or relating to or practicing dermatology | Synonyms: dermatologic |
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| despisal | (noun) a feeling of scornful hatred | Synonyms: despising |
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| despiteful | (adjective) showing malicious ill will and a desire to hurt; motivated by spite | Synonyms: spiteful, vindictive |
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| despoil | (verb) destroy and strip of its possession | Synonyms: plunder, rape, spoil, violate |
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| (verb) steal goods; take as spoils | Synonyms: foray, loot, pillage, plunder, ransack, reave, rifle, strip |
| despotical | (adjective) belonging to or having the characteristics of a despot | Synonyms: despotic |
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| dessertspoonful | (noun) as much as a dessert spoon will hold | Synonyms: dessertspoon |
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| detail | (noun) an isolated fact that is considered separately from the whole | Synonyms: item, point |
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| (noun) extended treatment of particulars | - |
| (noun) a temporary military unit | Synonyms: contingent |
| (noun) a crew of workers selected for a particular task | - |
| (noun) a small part that can be considered separately from the whole | Synonyms: item, particular |
| (verb) assign to a specific task | - |
| (verb) provide details for | - |
| detrimental | (adjective) (sometimes followed by `to') causing harm or injury | Synonyms: damaging, prejudicial, prejudicious |
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| developmental | (adjective) of or relating to or constituting development | - |
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| devil | (noun) a word used in exclamations of confusion | Synonyms: deuce, dickens |
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| (noun) an evil supernatural being | Synonyms: daemon, daimon, demon, fiend |
| (noun) a cruel wicked and inhuman person | Synonyms: demon, fiend, monster, ogre |
| (noun) a rowdy or mischievous person (usually a young man) | Synonyms: heller, hellion |
| (verb) coat or stuff with a spicy paste | - |
| (verb) cause annoyance in; disturb, especially by minor irritations | Synonyms: annoy, bother, chafe, get at, get to, gravel, irritate, nark, nettle, rag, rile, vex |
| devisal | (noun) the act of devising something | Synonyms: contrivance |
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| devotional | (adjective) relating to worship | - |
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| (noun) a short religious service | - |
| dextral | (adjective) of or on the right | - |
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| (adjective) preferring to use right foot or hand or eye | - |
| dextrorsal | (adjective) spiraling upward from left to right | Synonyms: dextrorse |
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| dhal | (noun) tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics | Synonyms: cajan pea, Cajanus cajan, catjang pea, dahl, pigeon-pea plant, pigeon pea, red gram |
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| diabolical | (adjective) extremely evil or cruel; expressive of cruelty or befitting hell | Synonyms: demonic, diabolic, fiendish, hellish, infernal, satanic, unholy |
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| (adjective) showing the cunning or ingenuity or wickedness typical of a devil | Synonyms: devilish, diabolic, mephistophelean, mephistophelian |
| diacritical | (adjective) capable of distinguishing | Synonyms: diacritic |
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| diagonal | (adjective) having an oblique or slanted direction | Synonyms: aslant, aslope, slanted, slanting, sloped, sloping |
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| (adjective) connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face | - |
| (noun) a punctuation mark (/) used to separate related items of information | Synonyms: separatrix, slash, solidus, stroke, virgule |
| (noun) an oblique line of squares of the same color on a checkerboard | - |
| (noun) (mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry | - |
| (noun) a line or cut across a fabric that is not at right angles to a side of the fabric | Synonyms: bias |
| (noun) (geometry) a straight line connecting any two vertices of a polygon that are not adjacent | - |
| diagrammatical | (adjective) shown or represented by diagrams | Synonyms: diagrammatic |
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| dial | (noun) the face of a timepiece; graduated to show the hours | - |
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| (noun) a disc on a telephone that is rotated a fixed distance for each number called | Synonyms: telephone dial |
| (noun) the circular graduated indicator on various measuring instruments | - |
| (noun) the control on a radio or television set that is used for tuning | - |
| (verb) choose by means of a dial | - |
| (verb) operate a dial to select a telephone number | - |
| dialectal | (adjective) belonging to or characteristic of a dialect | - |
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| dialectical | (adjective) of or relating to or employing dialectic | Synonyms: dialectic |
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| diametral | (adjective) related to or along a diameter | Synonyms: diametric, diametrical |
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| diametrical | (adjective) related to or along a diameter | Synonyms: diametral, diametric |
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| (adjective) characterized by opposite extremes; completely opposed | Synonyms: diametric, opposite, polar |
| diaphyseal | (adjective) relating to the diaphysis of a bone | Synonyms: diaphysial |
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| diaphysial | (adjective) relating to the diaphysis of a bone | Synonyms: diaphyseal |
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| diarrheal | (adjective) of or relating to diarrhea | Synonyms: diarrheic, diarrhetic, diarrhoeal, diarrhoeic, diarrhoetic |
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| diarrhoeal | (adjective) of or relating to diarrhea | Synonyms: diarrheal, diarrheic, diarrhetic, diarrhoeic, diarrhoetic |
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| dicoumarol | (noun) an anticoagulant drug that has now been largely replaced by warfarin | Synonyms: dicumarol |
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| dictatorial | (adjective) of or characteristic of a dictator | - |
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| (adjective) expecting unquestioning obedience | Synonyms: authoritarian, overbearing |
| (adjective) characteristic of an absolute ruler or absolute rule; having absolute sovereignty | Synonyms: authoritarian, autocratic, despotic, tyrannic, tyrannical |
| dicumarol | (noun) an anticoagulant drug that has now been largely replaced by warfarin | Synonyms: dicoumarol |
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| didactical | (adjective) instructive (especially excessively) | Synonyms: didactic |
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| diesel | (noun) an internal-combustion engine that burns heavy oil | Synonyms: diesel engine, diesel motor |
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| diestrual | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, dioestrous, dioestrual |
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| dietetical | (adjective) of or relating to the diet | Synonyms: dietary, dietetic |
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| diethylstilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, stilbesterol |
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| diethylstilbestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilboestrol, stilbestrol, stilboestrol |
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| diethylstilboestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, stilbestrol, stilboestrol |
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| differential | (adjective) relating to or showing a difference | - |
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| (adjective) involving or containing one or more derivatives | - |
| (noun) a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves | Synonyms: differential gear |
| (noun) a quality that differentiates between similar things | - |
| (noun) the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx | Synonyms: derivative, derived function, differential coefficient, first derivative |
| diflunisal | (noun) nonsteroidal anti-inflammatory (trade name Dolobid) used to treat arthritis and other inflammatory conditions | Synonyms: Dolobid |
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| digital | (adjective) of a circuit or device that represents magnitudes in digits | - |
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| (adjective) relating to or performed with the fingers | - |
| (adjective) displaying numbers rather than scale positions | - |
| dill | (noun) aromatic threadlike foliage of the dill plant used as seasoning | Synonyms: dill weed |
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| (noun) aromatic Old World herb having aromatic threadlike foliage and seeds used as seasoning | Synonyms: Anethum graveolens |
| diluvial | (adjective) of or connected with a deluge | Synonyms: diluvian |
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| dimensional | (adjective) of or relating to dimensions | - |
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| (adjective) having dimension--the quality or character or stature proper to a person | - |
| dioestrual | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, diestrual, dioestrous |
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| diol | (noun) any of a class of alcohols having 2 hydroxyl groups in each molecule | Synonyms: dihydric alcohol, glycol |
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| diplomatical | (adjective) using or marked by tact in dealing with sensitive matters or people | Synonyms: diplomatic |
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| directional | (adjective) relating to or indicating directions in space | - |
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| (adjective) relating to direction toward a (nonspatial) goal | - |
| (adjective) showing the way by conducting or leading; imposing direction on | Synonyms: directing, directive, guiding |
| direful | (adjective) causing fear or dread or terror | Synonyms: awful, dire, dread, dreaded, dreadful, fearful, fearsome, frightening, horrendous, horrific, terrible |
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| dirndl | (noun) a dress with a tight bodice and full skirt | - |
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| (noun) a full skirt with a gathered waistband | - |
| disapproval | (noun) the act of disapproving or condemning | - |
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| (noun) an inclination to withhold approval from some person or group | Synonyms: disfavor, disfavour, dislike |
| (noun) the expression of disapproval | - |
| (noun) a feeling of disliking something or what someone is doing | - |
| disavowal | (noun) denial of any connection with or knowledge of | Synonyms: disclaimer |
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| disbursal | (noun) the act of spending or disbursing money | Synonyms: disbursement, outlay, spending |
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| (noun) amounts paid for goods and services that may be currently tax deductible (as opposed to capital expenditures) | Synonyms: disbursement, expense |
| disciplinal | (adjective) designed to promote discipline | Synonyms: corrective, disciplinary |
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| discoidal | (adjective) having a flat circular shape | Synonyms: disc-shaped, disclike, discoid, disk-shaped, disklike |
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| discretional | (adjective) having or using the ability to act or decide according to your own discretion or judgment | Synonyms: discretionary |
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| disdainful | (adjective) expressing extreme contempt | Synonyms: contemptuous, insulting, scornful |
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| (adjective) having or showing arrogant superiority to and disdain of those one views as unworthy | Synonyms: haughty, imperious, lordly, overbearing, prideful, sniffy, supercilious, swaggering |
| disembowel | (verb) remove the entrails of | Synonyms: draw, eviscerate |
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| disembroil | (verb) free from involvement or entanglement | Synonyms: disentangle, disinvolve |
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| disgraceful | (adjective) (used of conduct or character) deserving or bringing disgrace or shame | Synonyms: black, ignominious, inglorious, opprobrious, shameful |
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| (adjective) giving offense to moral sensibilities and injurious to reputation | Synonyms: scandalous, shameful, shocking |
| disgustful | (adjective) highly offensive; arousing aversion or disgust | Synonyms: disgusting, distasteful, foul, loathly, loathsome, repellant, repellent, repelling, revolting, skanky, wicked, yucky |
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| dishevel | (verb) disarrange or rumple; dishevel | Synonyms: tangle, tousle |
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| dishful | (noun) the quantity that a dish will hold | Synonyms: dish |
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| dishtowel | (noun) a towel for drying dishes | Synonyms: dish towel, tea towel |
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| disloyal | (adjective) deserting your allegiance or duty to leader or cause or principle | - |
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| (adjective) showing lack of love for your country | Synonyms: unpatriotic |
| dismal | (adjective) causing dejection | Synonyms: blue, dark, dingy, disconsolate, drab, drear, dreary, gloomy, grim, sorry |
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| dismissal | (noun) the termination of someone's employment (leaving them free to depart) | Synonyms: discharge, dismission, firing, liberation, release, sack, sacking |
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| (noun) a judgment disposing of the matter without a trial | Synonyms: judgement of dismissal, judgment of dismissal |
| (noun) official notice that you have been fired from your job | Synonyms: dismission, pink slip |
| (noun) permission to go; the sending away of someone | - |
| dispel | (verb) force to go away; used both with concrete and metaphoric meanings | Synonyms: chase away, drive away, drive off, drive out, run off, turn back |
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| (verb) to cause to separate and go in different directions | Synonyms: break up, disperse, dissipate, scatter |
| dispersal | (noun) the act of dispersing or diffusing something | Synonyms: diffusion, dispersion, dissemination |
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| disposal | (noun) the act or means of getting rid of something | Synonyms: disposition |
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| (noun) a method of tending to or managing the affairs of some group of people (especially the group's business affairs) | Synonyms: administration |
| (noun) a kitchen appliance for disposing of garbage | Synonyms: electric pig, garbage disposal |
| (noun) the power to use something or someone | - |
| disproportional | (adjective) out of proportion | Synonyms: disproportionate |
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| disrespectful | (adjective) exhibiting lack of respect; rude and discourteous | - |
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| (adjective) neither feeling nor showing respect | Synonyms: aweless, awless |
| distal | (adjective) situated farthest from point of attachment or origin, as of a limb or bone | - |
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| (adjective) directed away from the midline or mesial plane of the body | - |
| distasteful | (adjective) highly offensive; arousing aversion or disgust | Synonyms: disgustful, disgusting, foul, loathly, loathsome, repellant, repellent, repelling, revolting, skanky, wicked, yucky |
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| (adjective) not pleasing in odor or taste | Synonyms: unsavory, unsavoury |
| distil | (verb) give off (a liquid) | Synonyms: distill |
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| (verb) undergo the process of distillation | Synonyms: distill |
| (verb) extract by the process of distillation | Synonyms: distill, extract |
| (verb) undergo condensation; change from a gaseous to a liquid state and fall in drops | Synonyms: condense, distill |
| (verb) remove impurities from, increase the concentration of, and separate through the process of distillation | Synonyms: distill, make pure, purify, sublimate |
| distill | (verb) give off (a liquid) | Synonyms: distil |
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| (verb) undergo the process of distillation | Synonyms: distil |
| (verb) extract by the process of distillation | Synonyms: distil, extract |
| (verb) remove impurities from, increase the concentration of, and separate through the process of distillation | Synonyms: distil, make pure, purify, sublimate |
| (verb) undergo condensation; change from a gaseous to a liquid state and fall in drops | Synonyms: condense, distil |
| distressful | (adjective) causing distress or worry or anxiety | Synonyms: distressing, disturbing, perturbing, troubling, worrisome, worrying |
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| distributional | (adjective) of or relating to spatial distribution | - |
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| distrustful | (adjective) having or showing distrust | - |
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| diurnal | (adjective) of or belonging to or active during the day | - |
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| (adjective) having a daily cycle or occurring every day | - |
| divisional | (adjective) of or relating to a military division | - |
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| (adjective) serving to divide or marking a division | - |
| (adjective) constituting a division or an aliquot part of the basic monetary unit | Synonyms: fractional |
| dkl | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decaliter, decalitre, dekaliter, dekalitre |
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| dl | (noun) a metric unit of volume equal to one tenth of a liter | Synonyms: deciliter, decilitre |
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| doctoral | (adjective) of or relating to a doctor or doctorate | Synonyms: doctorial |
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| doctorial | (adjective) of or relating to a doctor or doctorate | Synonyms: doctoral |
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