| Scrabble Word | Definition |
| adscititious15 | Derived or acquired from something extrinsic; not part of the real, inherent, or essential nature of a thing. |
| advantageous17 | Being of advantage, beneficial. |
| adventitious16 | From an external source; not innate or inherent, foreign. |
| altitudinous13 | (humorous) Lofty; very high. |
| ambidextrous24 | Having equal ability in both hands; in particular, able to write equally well with both hands. |
| amentiferous17 | (botany) Bearing catkins. |
| anemophilous19 | pollinated by the wind |
| ankylosaurus19 | A large herbivorous dinosaur, of genus Ankylosaurus, that lived in the Cretaceous period, noted for its heavy armor and club-like tail. |
| anthophilous20 | Living or growing on flowers |
| argillaceous15 | (chiefly geology) pertaining to clay; made of, containing, or resembling clay |
| ascomycetous21 | (mycology) Of or relating to the ascomycetes. |
| asynchronous20 | Not synchronous; occurring at different times. |
| atheromatous17 | Of, pertaining to, or having atheromas. |
| Scrabble Word | Definition |
| abstentious13 | Characterized by abstinence; self-restraint. |
| acrimonious15 | (archaic) Harsh and sharp, or bitter and not pleasant to the taste; acrid, pungent. |
| adenomatous14 | Of or pertaining to adenoma |
| adventurous15 | (of a person) Inclined to adventure; willing to take risks; prone to embark on hazardous enterprises; daring. |
| altocumulus15 | (physics, meteorology) A fleecy cloud formation consisting of large whitish or greyish globular cloudlets with shaded portions, often grouped in flocks or rows. (Abbreviated Ac.) |
| altostratus11 | (physics, meteorology) A principal medium-level cloud type in the form of a gray or bluish (never white) sheet or layer of striated, fibrous, or uniform appearance. |
| anachronous16 | anachronistic |
| androgynous16 | Possessing the sex organs of both sexes. [from the earlier 17th c.] |
| anfractuous16 | sinuous, twisty, winding. |
| angiomatous14 | Relating to an angioma. |
| anisogamous14 | being married to someone whose age differs by an unusually large degree from one's own. |
| apatosaurus13 | A large sauropod dinosaur of the genus Apatosaurus of the late Jurassic Period. Apatosaurs had a long neck and tail and a relatively small head. |
| arenicolous13 | (biology) living or burrowing in sand |
| aspergillus14 | Any of many molds, of the genus Aspergillus, many of which are pathogenic. |
| atrabilious13 | (medicine, obsolete) Having an excess of black bile. |
| Scrabble Word | Definition |
| abstemious14 | Refraining from freely consuming food or strong drink; sparing in diet; abstinent, temperate. [From early 17th c.] |
| acephalous17 | Headless |
| adenovirus14 | (medicine) Any virus of the family Adenoviridae, many of which are responsible for respiratory infections in humans |
| adulterous11 | Of, or characterized by adultery. |
| agapanthus16 | Any member of the genus Agapanthus of flowering plants. |
| alacritous12 | (rare) Brisk, speedy, with alacrity, quick and eager. |
| albuminous14 | Relating to, containing, or having the properties of albumen or albumin. |
| alliaceous12 | Smelling or tasting of garlic or onion. |
| allogamous13 | (botany) Characterized by allogamy. |
| allosaurus10 | A large, carnivorous dinosaur, of genus Allosaurus, that lived in the Jurassic period. |
| amphibious19 | Capable of functioning on land or in water. |
| anadromous13 | (of a migratory fish) That lives in the sea and breeds in fresh water. |
| anasarcous12 | Belonging to, or affected by, anasarca, or dropsy; dropsical. |
| anatropous12 | (botany, of an ovule) Having an inverted nucleus, whose apex points to the base |
| anilinctus12 | Rare form of anilingus. |
| antitragus11 | (anatomy) A projection on the lower posterior portion of the auricle of the ear opposite the tragus. |
| antonymous15 | having an opposite or diametrically opposed meaning |
| aposporous14 | (botany) relating to apospory |
| aquiferous22 | (geology) Of or pertaining to an aquifer |
| arenaceous12 | (of soil) Sandy. |
| Scrabble Word | Definition |
| aboideaus12 | plural of aboideau |
| aboiteaus11 | plural of aboiteau |
| acanthous14 | (botany) Synonym of spinous |
| acclivous16 | sloping upward; rising like a hillside. |
| acervulus14 | Synonym of corpora arenacea (calcified concretions near the pineal gland) |
| achromous16 | colorless; achromatic |
| acidulous12 | Slightly sour; sub-acid; sourish. |
| acuminous13 | Characterized by acumen; keen. |
| ailanthus12 | Any of several deciduous Asiatic trees of the genus Ailanthus, including the tree of heaven. |
| alburnous11 | Of or pertaining to alburnum. |
| aluminous11 | (chemistry) of or pertaining to alumina or alum |
| ambagious14 | Roundabout; vague. |
| ambiguous14 | Open to multiple interpretations. |
| ambitious13 | (of a person or their character) Having or showing ambition; wanting a lot of power, honor, respect, superiority, or other distinction. |
| amianthus14 | A type of asbestos with long, soft, thin fibers. |
| amorphous16 | Lacking a definite form or clear shape. |
| amphioxus23 | The lancelet, particularly of the genus Branchiostoma. |
| analogous10 | Having analogy; corresponding to something else; bearing some resemblance or proportion (often followed by "to".) |
| anestrous9 | of, or pertaining to, anestrus |
| anhydrous16 | Having little or no water. |
| Scrabble Word | Definition |
| abomasus12 | Alternative form of abomasum |
| acanthus13 | A member of the genus Acanthus of herbaceous prickly plants with toothed leaves, (family Acanthaceae, order Lamiales (formerly Scrophulariales)) found in the south of Europe, Asia Minor, and India.[First attested in the mid 16th century.] |
| acarpous12 | (botany) Not producing fruit; unfruitful; sterile. |
| acaulous10 | (botany) acaulescent |
| acoelous10 | (zoology) Without a coelom. |
| aduncous11 | curved inwards; hooked |
| afflatus14 | A sudden rush of creative impulse or inspiration, often attributed to divine influence. |
| alveolus11 | A small cavity or pit. |
| amiantus10 | Alternative spelling of amianthus |
| amplexus19 | A form of pseudocopulation, found chiefly in amphibians and horseshoe crabs, in which a male grasps a female with his front legs as part of the mating process. |
| anestrus8 | In some female animals, a spell of sexual respite in between breeding periods. |
| anginous9 | Of or pertaining to angina, especially to angina pectoris |
| angulous9 | (archaic) angular; having corners |
| anserous8 | resembling a goose |
| aphthous16 | (pathology) Of, or relating to aphtha. |
| apiculus12 | (mycology) The part of a spore which attaches to the sterigmata at the end of a basidium. |
| apterous10 | (zoology) Destitute of wings; wingless. |
| araceous10 | (botany) Of or relating to a family of plants, Araceae, of which the genus Arum is the type. |
| arborous10 | Formed by trees; filled or covered with trees. |
| arquebus19 | Alternative form of harquebus (“an obsolete matchlock firearm”). |
| Scrabble Word | Definition |
| abortus9 | An abortion. [First attested in the mid 19th century.] |
| acajous16 | plural of acajou |
| acerous9 | Alternative spelling of acerose |
| acetous9 | Having a sour taste; sour; acid. |
| acinous9 | Alternative spelling of acinose |
| aculeus9 | (botany) A sharp spike or other projection growing on a plant, as in some brambles and roses. [from 18th c.] |
| adipous10 | (anatomy, archaic) Of or relating to adipose, the fatty tissue. |
| aeneous7 | Bronze-colored. |
| agamous10 | (biology) Having no visible sex organs; asexual or cryptogamous. |
| alumnus9 | A male pupil or student. |
| amadous10 | plural of amadou |
| amorous9 | Inclined or having a propensity to love, or to sexual enjoyment. |
| angelus8 | Alternative form of Angelus |
| annulus7 | A ring- or donut-shaped area or structure. |
| anurous7 | Having no tail. |
| anxious14 | Nervous and worried. |
| apercus11 | plural of apercu |
| apodous10 | (chiefly biology) apodal |
| aqueous16 | (chemistry) Consisting mostly of water. |
| arbutus9 | A flowering plant in the genus Arbutus: the strawberry tree. |
| Scrabble Word | Definition |
| abacus10 | (historical, obsolete) A table or tray scattered with sand which was used for calculating or drawing. [attested from c. 1387] |
| acarus8 | (zoology, acarology) Any member of the subclass Acari (aka Acarina): thus, a mite or a tick; specifically, any mite of the genus Acarus. |
| acinus8 | (botany) One of the small grains or drupelets which make up some kinds of fruit, as the blackberry, raspberry, etc. |
| adieus7 | plural of adieu |
| aeneus6 | |
| airbus8 | A subsonic jet airliner, especially a wide-bodied one. |
| amicus10 | (law, informal) Someone not a party to a case who submits a brief and/or presents oral argument in that case. |
| animus8 | The basic impulses and instincts which govern one's actions. |
| aureus6 | A gold coin, minted in the Roman Empire from approximately 100 B.C.E. to 309 C.E., equal to 25 denarii. |
| aurous6 | Relating to gold. |
| awmous11 | |