| antacid | (noun) an agent that counteracts or neutralizes acidity (especially in the stomach) | Synonyms: alkaliser, alkalizer, antiacid, gastric antacid |
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| attache | (noun) a shallow and rectangular briefcase | Synonyms: attache case |
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| (noun) a specialist assigned to the staff of a diplomatic mission | - |
| attachment | (noun) the act of fastening things together | Synonyms: fastening |
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| (noun) the act of attaching or affixing something | Synonyms: affixation |
| (noun) faithful support for a cause or political party or religion | Synonyms: adherence, adhesion |
| (noun) a supplementary part or accessory | - |
| (noun) a connection that fastens things together | Synonyms: bond |
| (noun) a writ authorizing the seizure of property that may be needed for the payment of a judgment in a judicial proceeding | - |
| (noun) a feeling of affection for a person or an institution | Synonyms: fond regard |
| attack | (noun) (military) an offensive against an enemy (using weapons) | Synonyms: onrush, onset, onslaught |
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| (noun) a decisive manner of beginning a musical tone or phrase | Synonyms: tone-beginning |
| (noun) the act of attacking | Synonyms: attempt |
| (noun) ideas or actions intended to deal with a problem or situation | Synonyms: approach, plan of attack |
| (noun) an offensive move in a sport or game | - |
| (noun) strong criticism | - |
| (noun) intense adverse criticism | Synonyms: blast, fire, flack, flak |
| (noun) the onset of a corrosive or destructive process (as by a chemical agent) | - |
| (noun) a sudden occurrence of an uncontrollable condition | - |
| attacker | (noun) someone who attacks | Synonyms: aggressor, assailant, assaulter |
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| autacoid | (noun) any physiologically active internal secretion especially one of uncertain classification | Synonyms: autocoid |
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| bioattack | (noun) the use of bacteria or viruses or toxins to destroy men and animals or food | Synonyms: biologic attack, biological attack, biological warfare, BW |
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| butacaine | (noun) a white crystalline ester that is applied to mucous membranes as a local anesthetic | Synonyms: butacaine sulfate |
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| catacaustic | (noun) a caustic curve formed by light reflecting from a curved surface. | - |
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| catachresis | (noun) strained or paradoxical use of words either in error (as `blatant' to mean `flagrant') or deliberately (as in a mixed metaphor: `blind mouths') | - |
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| cataclysm | (noun) an event resulting in great loss and misfortune | Synonyms: calamity, catastrophe, disaster, tragedy |
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| (noun) a sudden violent change in the earth's surface | Synonyms: catastrophe |
| catacomb | (noun) an underground tunnel with recesses where bodies were buried (as in ancient Rome) | - |
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| cetacean | (noun) large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals | Synonyms: blower, cetacean mammal |
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| chimneystack | (noun) the part of the chimney that is above the roof; usually has several flues | - |
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| contact | (noun) the act of touching physically | Synonyms: physical contact |
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| (noun) close interaction | - |
| (noun) (electronics) a junction where things (as two electrical conductors) touch or are in physical contact | Synonyms: tangency |
| (noun) a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication | Synonyms: contact lens |
| (noun) a channel for communication between groups | Synonyms: inter-group communication, liaison, link |
| (noun) a communicative interaction | Synonyms: touch |
| (noun) the physical coming together of two or more things | Synonyms: impinging, striking |
| (noun) a person who is in a position to give you special assistance | Synonyms: middleman |
| (noun) the state or condition of touching or of being in immediate proximity | - |
| counterattack | (noun) an attack by a defending force against an attacking enemy force in order to regain lost ground or cut off enemy advance units etc. | Synonyms: countermove |
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| (noun) (chess) an attack that is intended to counter the opponent's advantage in another part of the board | Synonyms: counterplay |
| crustacean | (noun) any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton | - |
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| detachment | (noun) the act of releasing from an attachment or connection | Synonyms: disengagement |
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| (noun) coming apart | Synonyms: breakup, separation |
| (noun) avoiding emotional involvement | Synonyms: withdrawal |
| (noun) a small unit of troops of special composition | - |
| (noun) the state of being isolated or detached | Synonyms: insularism, insularity, insulation |
| hackmatack | (noun) poplar of northeastern North America with broad heart-shaped leaves | Synonyms: balsam poplar, Populus balsamifera, tacamahac |
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| hardtack | (noun) very hard unsalted biscuit or bread; a former ship's staple | Synonyms: pilot biscuit, pilot bread, sea biscuit, ship biscuit |
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| (noun) a mountain mahogany | - |
| haystack | (noun) a stack of hay | Synonyms: hayrick, rick |
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| heartache | (noun) intense sorrow caused by loss of a loved one (especially by death) | Synonyms: brokenheartedness, grief, heartbreak |
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| intactness | (noun) the state of being unimpaired | - |
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| intestacy | (noun) the situation of being or dying without a legally valid will | - |
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| isotach | (noun) a line joining points with constant wind speed. | - |
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| metacarpal | (noun) any bone of the hand between the wrist and fingers | Synonyms: metacarpal bone |
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| metacarpus | (noun) the part of the hand between the carpus and phalanges | - |
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| metacenter | (noun) (shipbuilding) the point of intersection between two vertical lines, one line through the center of buoyancy of the hull of a ship in equilibrium and the other line through the center of buoyancy of the hull when the ship is inclined to one side; the distance of this intersection above the center of gravity is an indication of the stability of the ship | Synonyms: metacentre |
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| metacentre | (noun) (shipbuilding) the point of intersection between two vertical lines, one line through the center of buoyancy of the hull of a ship in equilibrium and the other line through the center of buoyancy of the hull when the ship is inclined to one side; the distance of this intersection above the center of gravity is an indication of the stability of the ship | Synonyms: metacenter |
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| metacyesis | (noun) pregnancy resulting from gestation elsewhere than in the uterus | Synonyms: eccyesis, ectopic gestation, ectopic pregnancy, extrauterine gestation, extrauterine pregnancy |
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| mostaccioli | (noun) pasta somewhat resembling little moustaches | - |
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| moustache | (noun) an unshaved growth of hair on the upper lip | Synonyms: mustache |
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| moustachio | (noun) a large bushy moustache (with hair growing sometimes down the sides of the mouth) | Synonyms: handle-bars, mustachio |
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| mustache | (noun) an unshaved growth of hair on the upper lip | Synonyms: moustache |
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| mustachio | (noun) a large bushy moustache (with hair growing sometimes down the sides of the mouth) | Synonyms: handle-bars, moustachio |
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| obstacle | (noun) an obstruction that stands in the way (and must be removed or surmounted or circumvented) | - |
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| (noun) something immaterial that stands in the way and must be circumvented or surmounted | Synonyms: obstruction |
| pataca | (noun) the basic unit of money in Macao | - |
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| pentacle | (noun) a star with 5 points; formed by 5 straight lines between the vertices of a pentagon and enclosing another pentagon | Synonyms: pentagram, pentangle |
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| pistachio | (noun) nut of Mediterranean trees having an edible green kernel | Synonyms: pistachio nut |
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| (noun) small tree of southern Europe and Asia Minor bearing small hard-shelled nuts | Synonyms: pistachio tree, Pistacia vera |
| protactinium | (noun) a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead | Synonyms: atomic number 91, Pa, protoactinium |
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| psittacosaur | (noun) primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal | Synonyms: psittacosaurus |
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| psittacosaurus | (noun) primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal | Synonyms: psittacosaur |
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| psittacosis | (noun) infectious disease of birds | Synonyms: parrot disease |
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| (noun) an atypical pneumonia caused by a rickettsia microorganism and transmitted to humans from infected birds | Synonyms: ornithosis, parrot fever |
| receptacle | (noun) a container that is used to put or keep things in | - |
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| (noun) an electrical (or electronic) fitting that is connected to a source of power and equipped to receive an insert | - |
| (noun) enlarged tip of a stem that bears the floral parts | - |
| smokestack | (noun) a large tall chimney through which combustion gases and smoke can be evacuated | Synonyms: stack |
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| soutache | (noun) a narrow braid used as a decorative trimming | - |
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| spectacle | (noun) a blunder that makes you look ridiculous; used in the phrase `make a spectacle of' yourself | - |
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| (noun) an elaborate and remarkable display on a lavish scale | - |
| (noun) something or someone seen (especially a notable or unusual sight) | - |
| spectacles | (noun) (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision | Synonyms: eyeglasses, glasses, specs |
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| spectacular | (noun) a lavishly produced performance | - |
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| stachyose | (noun) a tetrasaccharide found in the tubers of the Chinese artichoke | - |
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| stack | (noun) a large tall chimney through which combustion gases and smoke can be evacuated | Synonyms: smokestack |
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| (noun) a storage device that handles data so that the next item to be retrieved is the item most recently stored (LIFO) | Synonyms: push-down storage, push-down store |
| (noun) a list in which the next item to be removed is the item most recently stored (LIFO) | Synonyms: push-down list, push-down stack |
| (noun) an orderly pile | - |
| (noun) (often followed by `of') a large number or amount or extent | Synonyms: batch, deal, flock, good deal, great deal, hatful, heap, lot, mass, mess, mickle, mint, mountain, muckle, passel, peck, pile, plenty, pot, quite a little, raft, sight, slew, spate, tidy sum, wad |
| stacker | (noun) a laborer who builds up a stack or pile | - |
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| stacks | (noun) storage space in a library consisting of an extensive arrangement of bookshelves where most of the books are stored | - |
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| (noun) a large number or amount | Synonyms: dozens, gobs, heaps, lashings, loads, lots, oodles, piles, rafts, scads, scores, slews, tons, wads |
| stacte | (noun) (Old Testament) one of several sweet-smelling spices used in incense | - |
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| stactometer | (noun) a device for investigating surface tension using the stalagmometric method. | Synonyms: stalagmometer, stalogometer |
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| syntactician | (noun) a linguist who specializes in the study of grammar and syntax | Synonyms: grammarian |
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| tacamahac | (noun) poplar of northeastern North America with broad heart-shaped leaves | Synonyms: balsam poplar, hackmatack, Populus balsamifera |
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| tach | (noun) measuring instrument for indicating speed of rotation | Synonyms: tachometer |
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| tacheometer | (noun) a theodolite designed for rapid measurements | Synonyms: tachymeter |
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| tachistoscope | (noun) scientific instrument used by psychologists; presents visual stimuli for brief exposures | Synonyms: t-scope |
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| tachogram | (noun) a graphical record of speed and distance produced by a tachograph | - |
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| tachograph | (noun) a tachometer that produces a graphical record of its readings; used to record the speed and duration of trips in a motor vehicle | - |
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| tachometer | (noun) measuring instrument for indicating speed of rotation | Synonyms: tach |
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| tachycardia | (noun) abnormally rapid heartbeat (over 100 beats per minute) | - |
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| tachygraphy | (noun) a method of writing rapidly using an abbreviated symbolic system | Synonyms: shorthand, stenography |
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| tachylite | (noun) a basic or basalt glass | - |
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| tachymeter | (noun) a theodolite designed for rapid measurements | Synonyms: tacheometer |
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| taciturnity | (noun) the trait of being uncommunicative; not volunteering anything more than necessary | Synonyms: reserve, reticence |
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| tack | (noun) sailing a zigzag course | - |
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| (noun) (nautical) the act of changing tack | Synonyms: tacking |
| (noun) a short nail with a sharp point and a large head | - |
| (noun) gear for a horse | Synonyms: saddlery, stable gear |
| (noun) (nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind | Synonyms: mainsheet, sheet, shroud, weather sheet |
| (noun) the heading or position of a vessel relative to the trim of its sails | - |
| tacker | (noun) a hand-held machine for driving staples home | Synonyms: staple gun, staplegun |
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| (noun) a sewer who fastens a garment with long loose stitches | Synonyms: baster |
| (noun) a worker who fastens things by tacking them (as with tacks or by spotwelding) | - |
| tackiness | (noun) tastelessness by virtue of being cheap and vulgar | Synonyms: cheapness, sleaze, tat |
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| (noun) the property of being cohesive and sticky | Synonyms: cohesiveness, glueyness, gluiness, gumminess, ropiness, viscidity, viscidness |
| tacking | (noun) (nautical) the act of changing tack | Synonyms: tack |
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| (noun) a loose temporary sewing stitch to hold layers of fabric together | Synonyms: baste, basting, basting stitch |
| tackle | (noun) (American football) grasping an opposing player with the intention of stopping by throwing to the ground | - |
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| (noun) (American football) a position on the line of scrimmage, typically opposite one of the offensive guards | - |
| (noun) gear consisting of ropes etc. supporting a ship's masts and sails | Synonyms: rigging |
| (noun) gear used in fishing | Synonyms: fishing gear, fishing rig, fishing tackle, rig |
| (noun) the person who plays offensive or defensive tackle on a football team | - |
| tackler | (noun) a football player who tackles the ball carrier | - |
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| taco | (noun) a tortilla rolled cupped around a filling | - |
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| (noun) (ethnic slur) offensive term for a person of Mexican descent | Synonyms: greaser, wetback |
| taconite | (noun) a variety of chert containing magnetite and hematite; mined as a low-grade iron ore | - |
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| tact | (noun) consideration in dealing with others and avoiding giving offense | Synonyms: tactfulness |
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| tactfulness | (noun) consideration in dealing with others and avoiding giving offense | Synonyms: tact |
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| (noun) Behavior or actions characterized by careful consideration in dealing with others, to avoid giving offense. | - |
| tactic | (noun) a plan for attaining a particular goal | Synonyms: maneuver, manoeuvre, tactics |
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| tactician | (noun) a person who is skilled at planning tactics | - |
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| tactics | (noun) a plan for attaining a particular goal | Synonyms: maneuver, manoeuvre, tactic |
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| (noun) the branch of military science dealing with detailed maneuvers to achieve objectives set by strategy | - |
| tactility | (noun) the faculty of perceiving (via the skin) pressure or heat or pain | Synonyms: skin perceptiveness, tactual sensation, touch perception |
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| tactlessness | (noun) the quality of lacking tact | - |
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| tentacle | (noun) any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals; used for feeling or grasping or locomotion | - |
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| (noun) something that acts like a tentacle in its ability to grasp and hold | - |
| testacean | (noun) any of various rhizopods of the order Testacea characterized by having a shell | - |
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| thumbtack | (noun) a tack for attaching papers to a bulletin board or drawing board | Synonyms: drawing pin, pushpin |
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| ticktack | (noun) system of signalling by hand signs used by bookmakers at racetracks | - |
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| ticktacktoe | (noun) a game in which two players alternately put crosses and circles in one of the compartments of a square grid of nine spaces; the object is to get a row of three crosses or three circles before the opponent does | Synonyms: noughts and crosses, tic-tac-toe, tick-tack-toe, ticktacktoo, tit-tat-toe |
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| ticktacktoo | (noun) a game in which two players alternately put crosses and circles in one of the compartments of a square grid of nine spaces; the object is to get a row of three crosses or three circles before the opponent does | Synonyms: noughts and crosses, tic-tac-toe, tick-tack-toe, ticktacktoe, tit-tat-toe |
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| tictac | (noun) steady recurrent ticking sound as made by a clock | Synonyms: ticktock, tocktact |
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| tintack | (noun) tack or small nail of tinned iron | - |
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| tocktact | (noun) steady recurrent ticking sound as made by a clock | Synonyms: ticktock, tictac |
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