| altimeter | (noun) an instrument that measures the height above ground; used in navigation | - |
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| antepenultima | (noun) the 3rd syllable of a word counting back from the end | Synonyms: antepenult, antepenultimate |
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| antepenultimate | (adjective) third from last | - |
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| (noun) the 3rd syllable of a word counting back from the end | Synonyms: antepenult, antepenultima |
| antimacassar | (noun) a piece of ornamented cloth that protects the back of a chair from hair oils | - |
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| antimagnetic | (adjective) impervious to the effects of a magnetic field; resistant to magnetization | - |
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| antimalarial | (noun) a medicinal drug used to prevent or treat malaria | Synonyms: antimalarial drug |
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| antimatter | (noun) matter consisting of elementary particles that are the antiparticles of those making up normal substances | - |
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| antimeson | (noun) the antiparticle of a meson | - |
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| antimetabolite | (noun) an antineoplastic drug that inhibits the utilization of a metabolite | - |
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| antimetathesis | (noun) A rhetorical figure resulting from a reverted arrangement in the last clause of a sentence of the two principal words of the clause preceding; inversion of the members of an antithesis: as, "A poem is a speaking picture; a picture a mute poem". | - |
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| antimicrobial | (adjective) capable of destroying or inhibiting the growth of disease-causing microorganisms | Synonyms: antimicrobic |
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| (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobic, disinfectant, germicide |
| antimicrobic | (adjective) capable of destroying or inhibiting the growth of disease-causing microorganisms | Synonyms: antimicrobial |
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| (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobial, disinfectant, germicide |
| antimonial | (adjective) containing antimony | - |
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| antimonic | (adjective) relating to or derived from antimony | Synonyms: antimonious |
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| antimonious | (adjective) relating to or derived from antimony | Synonyms: antimonic |
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| antimonopoly | (adjective) of laws and regulations; designed to protect trade and commerce from unfair business practices | Synonyms: antitrust |
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| antimony | (noun) a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite | Synonyms: atomic number 51, Sb |
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| antimuon | (noun) the antiparticle of a muon; decays to positron and neutrino and antineutrino | Synonyms: positive muon |
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| antimycin | (noun) a crystalline antibiotic active against various fungi | - |
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| antimycotic | (noun) any agent that destroys or prevents the growth of fungi | Synonyms: antifungal, antifungal agent, antimycotic agent, fungicide |
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| bedtime | (noun) the time you go to bed | - |
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| betimes | (adverb) in good time | Synonyms: early |
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| centime | (noun) a coin worth one-hundredth of the value of the basic unit | Synonyms: cent, penny |
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| (noun) a fractional monetary unit of several countries: France and Algeria and Belgium and Burkina Faso and Burundi and Cameroon and Chad and the Congo and Gabon and Haiti and the Ivory Coast and Luxembourg and Mali and Morocco and Niger and Rwanda and Senegal and Switzerland and Togo | - |
| centimeter | (noun) a metric unit of length equal to one hundredth of a meter | Synonyms: centimetre, cm |
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| centimetre | (noun) a metric unit of length equal to one hundredth of a meter | Synonyms: centimeter, cm |
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| centimo | (noun) a fractional monetary unit of Venezuela and Costa Rica and Equatorial Guinea and Paraguay and Spain | - |
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| chittimwood | (noun) deciduous tree of southeastern United States and Mexico | Synonyms: black haw, Bumelia lanuginosa, chittamwood, false buckthorn, shittimwood |
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| (noun) shrubby tree of the Pacific coast of the United States; yields cascara sagrada | Synonyms: bearberry, bearwood, cascara buckthorn, chittamwood, Rhamnus purshianus |
| daytime | (noun) the time after sunrise and before sunset while it is light outside | Synonyms: day, daylight |
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| dinnertime | (noun) the customary or habitual hour for the evening meal | Synonyms: suppertime |
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| divertimento | (noun) a musical composition in several movements; has no fixed form | Synonyms: serenade |
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| downtime | (noun) a period of time when something (as a machine or factory) is not operating (especially as a result of malfunctions) | - |
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| estimable | (adjective) deserving of respect or high regard | - |
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| (adjective) may be computed or estimated | Synonyms: computable |
| (adjective) deserving of esteem and respect | Synonyms: admirable, good, honorable, respectable |
| estimate | (noun) a judgment of the qualities of something or somebody | Synonyms: estimation |
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| (noun) an approximate calculation of quantity or degree or worth | Synonyms: approximation, estimation, idea |
| (noun) the respect with which a person is held | Synonyms: estimation |
| (noun) a document appraising the value of something (as for insurance or taxation) | Synonyms: appraisal, estimation |
| (noun) a statement indicating the likely cost of some job | - |
| (verb) judge tentatively or form an estimate of (quantities or time) | Synonyms: approximate, gauge, guess, judge |
| (verb) judge to be probable | Synonyms: calculate, count on, figure, forecast, reckon |
| estimation | (noun) a judgment of the qualities of something or somebody | Synonyms: estimate |
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| (noun) an approximate calculation of quantity or degree or worth | Synonyms: approximation, estimate, idea |
| (noun) the respect with which a person is held | Synonyms: estimate |
| (noun) a document appraising the value of something (as for insurance or taxation) | Synonyms: appraisal, estimate |
| estimator | (noun) an expert at calculation (or at operating calculating machines) | Synonyms: calculator, computer, figurer, reckoner |
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| guesstimate | (noun) an estimate that combines reasoning with guessing | Synonyms: guestimate |
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| (verb) estimate based on a calculation | - |
| guestimate | (noun) an estimate that combines reasoning with guessing | Synonyms: guesstimate |
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| halftime | (noun) an intermission between the first and second half of a game | - |
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| illegitimacy | (noun) unlawfulness by virtue of not being authorized by or in accordance with law | - |
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| (noun) the status of being born to parents who were not married | Synonyms: bar sinister, bastardy |
| illegitimate | (adjective) of marriages and offspring; not recognized as lawful | - |
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| (adjective) contrary to or forbidden by law | Synonyms: illicit, outlaw, outlawed, unlawful |
| (noun) the illegitimate offspring of unmarried parents | Synonyms: bastard, by-blow, illegitimate child, love child, whoreson |
| illegitimately | (adverb) of biological parents not married to each other | Synonyms: out of wedlock |
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| (adverb) in a manner disapproved or not allowed by custom | Synonyms: illicitly |
| inestimable | (adjective) beyond calculation or measure | Synonyms: immeasurable, incomputable |
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| intima | (noun) the innermost membrane of an organ (especially the inner lining of an artery or vein or lymphatic vessel) | - |
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| intimacy | (noun) close or warm friendship | Synonyms: closeness, familiarity |
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| (noun) a feeling of being intimate and belonging together | Synonyms: closeness |
| (noun) a usually secretive or illicit sexual relationship | Synonyms: affair, affaire, amour, involvement, liaison |
| intimal | (adjective) of or relating to the intima | - |
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| intimate | (adjective) marked by close acquaintance, association, or familiarity | - |
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| (adjective) thoroughly acquainted through study or experience | Synonyms: knowledgeable, versed |
| (adjective) having or fostering a warm or friendly and informal atmosphere | Synonyms: cosy, cozy, informal |
| (adjective) innermost or essential | Synonyms: inner, internal |
| (adjective) concerning things deeply private and personal | Synonyms: private |
| (adjective) used euphemistically to refer to the genitals | - |
| (adjective) involved in a sexual relationship | Synonyms: sexual |
| (adjective) having mutual interests or affections; of established friendship | Synonyms: familiar |
| (noun) someone to whom private matters are confided | Synonyms: confidant |
| (verb) give to understand | Synonyms: adumbrate, insinuate |
| (verb) imply as a possibility | Synonyms: suggest |
| intimately | (adverb) in a close manner | Synonyms: closely, nearly |
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| (adverb) with great or especially intimate knowledge | Synonyms: well |
| intimation | (noun) a slight suggestion or vague understanding | Synonyms: glimmer, glimmering, inkling |
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| (noun) an indirect suggestion | Synonyms: breath, hint |
| intimidate | (verb) make timid or fearful | - |
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| (verb) to compel or deter by or as if by threats | - |
| intimidated | (adjective) made timid or fearful as by threats | - |
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| intimidating | (adjective) discouraging through fear | Synonyms: daunting |
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| intimidation | (noun) the act of intimidating a weaker person to make them do something | Synonyms: bullying |
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| (noun) a communication that makes you afraid to try something | Synonyms: determent, deterrence |
| (noun) the feeling of being intimidated; being made to feel afraid or timid | - |
| (noun) the feeling of discouragement in the face of someone's superior fame or wealth or status etc. | - |
| legitimacy | (noun) lawfulness by virtue of being authorized or in accordance with law | - |
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| (noun) undisputed credibility | Synonyms: authenticity, genuineness |
| legitimate | (adjective) of marriages and offspring; recognized as lawful | - |
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| (adjective) in accordance with recognized or accepted standards or principles | - |
| (adjective) authorized, sanctioned by, or in accordance with law | Synonyms: lawful, licit |
| (adjective) based on known statements or events or conditions | Synonyms: logical |
| (verb) make (an illegitimate child) legitimate; declare the legitimacy of (someone) | - |
| (verb) show or affirm to be just and legitimate | - |
| (verb) make legal | Synonyms: decriminalise, decriminalize, legalise, legalize, legitimatise, legitimatize, legitimise, legitimize |
| legitimately | (adverb) in a lawfully recognized manner | - |
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| (adverb) in a manner acceptable to common custom | Synonyms: lawfully, licitly |
| legitimation | (noun) the act of making lawful | Synonyms: legalisation, legalization |
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| (noun) the act of rendering a person legitimate | - |
| legitimatise | (verb) make legal | Synonyms: decriminalise, decriminalize, legalise, legalize, legitimate, legitimatize, legitimise, legitimize |
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| legitimatize | (verb) make legal | Synonyms: decriminalise, decriminalize, legalise, legalize, legitimate, legitimatise, legitimise, legitimize |
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| legitimise | (verb) make legal | Synonyms: decriminalise, decriminalize, legalise, legalize, legitimate, legitimatise, legitimatize, legitimize |
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| legitimize | (verb) make legal | Synonyms: decriminalise, decriminalize, legalise, legalize, legitimate, legitimatise, legitimatize, legitimise |
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| lifetime | (noun) the period during which something is functional (as between birth and death) | Synonyms: life-time, life, lifespan |
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| literatim | (adverb) letter for letter | - |
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| longtime | (adjective) having existed or persisted or continued in a particular role or state for a long time | Synonyms: long-time |
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| lunchtime | (noun) the customary or habitual hour for eating lunch | Synonyms: lunch period |
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| maritime | (adjective) relating to or involving ships or shipping or navigation or seamen | Synonyms: marine, nautical |
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| (adjective) bordering on or living or characteristic of those near the sea | - |
| mealtime | (noun) the hour at which a meal is habitually or customarily eaten | - |
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| meantime | (noun) the time between one event, process, or period and another | Synonyms: interim, lag, meanwhile |
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| (adverb) during the intervening time | Synonyms: in the meantime, meanwhile |
| misestimate | (verb) calculate incorrectly | Synonyms: miscalculate |
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| (verb) to reckon wrongly | Synonyms: miscalculate |
| misestimation | (noun) a mistake in calculating | Synonyms: miscalculation, misreckoning |
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| mistime | (verb) time incorrectly | - |
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| mistiming | (noun) something located at a time when it could not have existed or occurred | Synonyms: anachronism, misdating |
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| multimedia | (noun) transmission that combine media of communication (text and graphics and sound etc.) | Synonyms: multimedia system |
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| nighttime | (noun) the time after sunset and before sunrise while it is dark outside | Synonyms: dark, night |
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| nonoptimality | (noun) The state of not being best, most favourable or desirable. | - |
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| oftentimes | (adverb) many times at short intervals | Synonyms: frequently, oft, often, ofttimes |
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| ofttimes | (adverb) many times at short intervals | Synonyms: frequently, oft, often, oftentimes |
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| oldtimer | (noun) an elderly man | Synonyms: antique, gaffer, old-timer, old geezer |
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| (noun) an experienced person who has been through many battles; someone who has given long service | Synonyms: old-timer, old hand, old stager, stager, veteran, warhorse |
| onetime | (adjective) belonging to some prior time | Synonyms: erstwhile, former, old, one-time, quondam, sometime |
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| optimal | (adjective) most desirable possible under a restriction expressed or implied | Synonyms: optimum |
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| optimally | (adverb) in an optimal and most desirable way | - |
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| optimisation | (noun) the act of rendering optimal | Synonyms: optimization |
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| optimise | (verb) act as an optimist and take a sunny view of the world | Synonyms: optimize |
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| (verb) make optimal; get the most out of; use best | Synonyms: optimize |
| (verb) modify to achieve maximum efficiency in storage capacity or time or cost | Synonyms: optimize |
| optimism | (noun) a general disposition to expect the best in all things | - |
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| (noun) the optimistic feeling that all is going to turn out well | - |
| optimist | (noun) a person disposed to take a favorable view of things | - |
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| optimistic | (adjective) expecting the best in this best of all possible worlds | - |
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| (adjective) expecting the best | Synonyms: affirmative |
| optimistically | (adverb) with optimism; in an optimistic manner | - |
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| optimization | (noun) the act of rendering optimal | Synonyms: optimisation |
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| optimize | (verb) act as an optimist and take a sunny view of the world | Synonyms: optimise |
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| (verb) make optimal; get the most out of; use best | Synonyms: optimise |
| (verb) modify to achieve maximum efficiency in storage capacity or time or cost | Synonyms: optimise |
| optimum | (adjective) most desirable possible under a restriction expressed or implied | Synonyms: optimal |
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| (noun) most favorable conditions or greatest degree or amount possible under given circumstances | - |
| overestimate | (noun) a calculation that results in an estimate that is too high | Synonyms: overestimation, overrating, overreckoning |
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| (noun) an appraisal that is too high | Synonyms: overappraisal, overestimation, overvaluation |
| (verb) make too high an estimate of | Synonyms: overrate |
| (verb) assign too high a value to | Synonyms: overvalue |
| overestimation | (noun) a calculation that results in an estimate that is too high | Synonyms: overestimate, overrating, overreckoning |
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| (noun) an appraisal that is too high | Synonyms: overappraisal, overestimate, overvaluation |
| overtime | (noun) playing time beyond regulation, to break a tie | Synonyms: extra time |
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| (noun) work done in addition to regular working hours | - |
| (adverb) beyond the regular time | - |
| parttime | (adverb) for less than the standard number of hours | Synonyms: half-time, part-time |
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| pastime | (noun) a diversion that occupies one's time and thoughts (usually pleasantly) | Synonyms: interest, pursuit |
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| peacetime | (noun) a period of time during which there is no war | - |
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| pentimento | (noun) the reappearance in a painting of an underlying image that had been painted over (usually when the later painting becomes transparent with age) | - |
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| penultima | (noun) the next to last syllable in a word | Synonyms: penult, penultimate |
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| penultimate | (adjective) second last | Synonyms: next-to-last |
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| (noun) the next to last syllable in a word | Synonyms: penult, penultima |
| playtime | (noun) time for play or diversion | Synonyms: playday |
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| presentiment | (noun) a feeling of evil to come | Synonyms: boding, foreboding, premonition |
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