| abecedarian | (adjective) alphabetically arranged (as for beginning readers) | - |
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| aeonian | (adjective) of or relating to a geological eon (longer than an era) | Synonyms: eonian |
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| (adjective) continuing forever or indefinitely | Synonyms: ageless, eonian, eternal, everlasting, perpetual, unceasing, unending |
| aesculapian | (adjective) of or belonging to Aesculapius or the healing art | Synonyms: medical |
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| agrarian | (adjective) relating to farming or agriculture | Synonyms: agricultural, farming |
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| ambrosian | (adjective) worthy of the gods | Synonyms: ambrosial |
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| (adjective) extremely pleasing to the taste; sweet and fragrant | Synonyms: ambrosial, nectarous |
| ameban | (adjective) pertaining to or resembling amoebae | Synonyms: amebic, amebous, amoeban, amoebic, amoebous |
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| amoeban | (adjective) pertaining to or resembling amoebae | Synonyms: ameban, amebic, amebous, amoebic, amoebous |
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| amphibian | (adjective) relating to or characteristic of animals of the class Amphibia | Synonyms: amphibious |
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| annelidan | (adjective) relating to or belonging to or characteristic of any worms of the phylum Annelida | Synonyms: annelid |
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| antediluvian | (adjective) of or relating to the period before the biblical flood | Synonyms: antediluvial |
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| (adjective) so extremely old as seeming to belong to an earlier period | Synonyms: antiquated, archaic |
| antemeridian | (adjective) before noon | - |
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| antiauthoritarian | (adjective) opposed to authoritarianism | - |
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| antinomian | (adjective) relating to or influenced by antinomianism | - |
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| antipodean | (adjective) relating to the antipodes or situated at opposite sides of the earth | Synonyms: antipodal |
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| antiquarian | (adjective) of or relating to antiques or antiquities | - |
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| (adjective) of or relating to persons who study or deal in antiques or antiquities | - |
| anuran | (adjective) relating to frogs and toads | Synonyms: batrachian, salientian |
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| apian | (adjective) relating to or having the characteristics of bees | - |
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| apiarian | (adjective) relating to bees or beekeeping | - |
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| apogean | (adjective) relating to or characteristic of an apogee | - |
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| arachnidian | (adjective) relating to or resembling a member of the class Arachnida | Synonyms: arachnoid, spiderlike, spiderly, spidery |
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| araneidan | (adjective) relating to or resembling a spider | Synonyms: araneidal |
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| arcadian | (adjective) (used with regard to idealized country life) idyllically rustic | Synonyms: bucolic, pastoral |
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| archaean | (adjective) of or relating to the earliest known rocks formed during the Precambrian Eon | Synonyms: archean |
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| archdiocesan | (adjective) of or relating to an archdiocese | - |
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| archean | (adjective) of or relating to the earliest known rocks formed during the Precambrian Eon | Synonyms: archaean |
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| archosaurian | (adjective) of or relating to reptiles of the subclass Archosauria | - |
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| artesian | (adjective) (of water) rising to the surface under internal hydrostatic pressure | - |
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| arthropodan | (adjective) of or relating to invertebrates of the phylum Arthropoda | Synonyms: arthropodal, arthropodous |
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| aurorean | (adjective) characteristic of the dawn | Synonyms: auroral |
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| authoritarian | (adjective) expecting unquestioning obedience | Synonyms: dictatorial, overbearing |
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| (adjective) characteristic of an absolute ruler or absolute rule; having absolute sovereignty | Synonyms: autocratic, despotic, dictatorial, tyrannic, tyrannical |
| avellan | (adjective) pertaining to filberts or hazelnuts | Synonyms: avellane |
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| avian | (adjective) pertaining to or characteristic of birds | - |
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| bacchanalian | (adjective) used of riotously drunken merrymaking | Synonyms: bacchanal, bacchic, carousing, orgiastic |
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| barbarian | (adjective) without civilizing influences | Synonyms: barbaric, savage, uncivilised, uncivilized, wild |
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| basilican | (adjective) of or relating to or resembling a basilica | - |
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| batrachian | (adjective) relating to frogs and toads | Synonyms: anuran, salientian |
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| bipartisan | (adjective) supported by both sides | Synonyms: bipartizan, two-party, two-way |
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| bipartizan | (adjective) supported by both sides | Synonyms: bipartisan, two-party, two-way |
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| bohemian | (adjective) unconventional in especially appearance and behavior | - |
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| branchiopodan | (adjective) of or relating to or characteristic of the subclass Branchiopoda | Synonyms: branchiopod, branchiopodous |
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| caducean | (adjective) of or relating to a caduceus | - |
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| caecilian | (adjective) of or relating to or belonging to the family Caeciliidae | - |
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| caesarean | (adjective) relating to abdominal delivery | Synonyms: caesarian, cesarean, cesarian |
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| caesarian | (adjective) relating to abdominal delivery | Synonyms: caesarean, cesarean, cesarian |
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| callipygian | (adjective) pertaining to or having finely developed buttocks | Synonyms: callipygous |
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| callithumpian | (adjective) of or relating to a callithump | - |
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| catapultian | (adjective) of or like a catapult | Synonyms: catapultic |
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| catarrhinian | (adjective) of or related to Old World monkeys that have nostrils together and opening downward | Synonyms: catarrhine |
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| centenarian | (adjective) being at least 100 years old | - |
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| cephalopodan | (adjective) relating or belonging to the class Cephalopoda | Synonyms: cephalopod |
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| cerulean | (adjective) of a deep somewhat purplish blue color similar to that of a clear October sky | Synonyms: azure, bright blue, sky-blue |
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| cesarean | (adjective) relating to abdominal delivery | Synonyms: caesarean, caesarian, cesarian |
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| cesarian | (adjective) relating to abdominal delivery | Synonyms: caesarean, caesarian, cesarean |
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| cetacean | (adjective) of or relating to whales and dolphins etc | Synonyms: cetaceous |
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| chaetognathan | (adjective) of or relating to arrowworms | Synonyms: chaetognathous |
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| chelonian | (adjective) of or relating to or resembling or being a turtle or tortoise | - |
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| christian | (adjective) following the teachings or manifesting the qualities or spirit of Jesus Christ | - |
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| chthonian | (adjective) dwelling beneath the surface of the earth | Synonyms: chthonic, nether |
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| circadian | (adjective) of or relating to biological processes occurring at 24-hour intervals | - |
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| civilian | (adjective) associated with civil life or performed by persons who are not active members of the military | - |
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| clean | (adjective) free from dirt or impurities; or having clean habits | - |
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| (adjective) (of behavior or especially language) free from objectionable elements; fit for all observers | Synonyms: unobjectionable |
| (adjective) not spreading pollution or contamination; especially radioactive contamination | Synonyms: uncontaminating |
| (adjective) ritually clean or pure | - |
| (adjective) free from clumsiness; precisely or deftly executed | Synonyms: neat |
| (adjective) free from sepsis or infection | Synonyms: uninfected |
| (adjective) thorough and without qualification | - |
| (adjective) without difficulties or problems | - |
| (adjective) (of a surface) not written or printed on | Synonyms: blank, white |
| (adjective) exhibiting or calling for sportsmanship or fair play | Synonyms: sporting, sportsmanlike, sporty |
| (adjective) (of a manuscript) having few alterations or corrections | Synonyms: fair |
| (adjective) morally pure | Synonyms: clean-living |
| (adjective) (of a record) having no marks of discredit or offense | - |
| (adjective) free from impurities | Synonyms: fresh |
| (adjective) free of drugs | - |
| (adjective) not carrying concealed weapons | - |
| (adjective) free of restrictions or qualifications | Synonyms: clear |
| (adjective) (of sound or color) free from anything that dulls or dims | Synonyms: clear, light, unclouded |
| corinthian | (adjective) of or relating to or characteristic of Corinth or its inhabitants | - |
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| (adjective) of or pertaining to the Corinthian style of architecture | - |
| cosmopolitan | (adjective) growing or occurring in many parts of the world | Synonyms: widely distributed |
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| (adjective) composed of people from or at home in many parts of the world; especially not provincial in attitudes or interests | - |
| (adjective) of worldwide scope or applicability | Synonyms: ecumenical, general, oecumenical, universal, world-wide, worldwide |
| crustacean | (adjective) of or belonging to the class Crustacea | Synonyms: crustaceous |
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| cyan | (adjective) of the blue-green color that is a primary subtractive color of light | - |
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| cyclopean | (adjective) of or relating to or resembling the Cyclops | - |
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| cyprian | (adjective) resembling the ancient orgiastic worship of Aphrodite on Cyprus | - |
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| deadpan | (adjective) deliberately impassive in manner | Synonyms: expressionless, impassive, poker-faced, unexpressive |
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| dictyopteran | (adjective) of or relating to or belonging to the order Dictyoptera | - |
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| diluvian | (adjective) of or connected with a deluge | Synonyms: diluvial |
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| diocesan | (adjective) belonging to or governing a diocese | - |
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| dioecian | (adjective) having male and female reproductive organs in separate plants or animals | Synonyms: dioecious |
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| dystopian | (adjective) as bad as can be; characterized by human misery | - |
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| (adjective) of or pertaining to or resembling a dystopia | - |
| ectozoan | (adjective) of or relating to epizoa | Synonyms: epizoan |
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| egalitarian | (adjective) favoring social equality | Synonyms: classless |
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| elysian | (adjective) relating to the Elysian Fields | - |
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| (adjective) being of such surpassing excellence as to suggest inspiration by the gods | Synonyms: divine, inspired |
| empyrean | (adjective) of or relating to the sky or heavens | Synonyms: empyreal |
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| (adjective) inspiring awe | Synonyms: empyreal, sublime |
| endozoan | (adjective) of or relating to entozoa | Synonyms: entozoan |
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| entozoan | (adjective) living within a living animal usually as a parasite | Synonyms: endozoic, entozoic |
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| (adjective) of or relating to entozoa | Synonyms: endozoan |
| eonian | (adjective) of or relating to a geological eon (longer than an era) | Synonyms: aeonian |
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| (adjective) continuing forever or indefinitely | Synonyms: aeonian, ageless, eternal, everlasting, perpetual, unceasing, unending |
| epicurean | (adjective) displaying luxury and furnishing gratification to the senses | Synonyms: luxuriant, luxurious, sybaritic, voluptuary, voluptuous |
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| (adjective) devoted to pleasure | Synonyms: hedonic, hedonistic |
| epizoan | (adjective) of or relating to epizoa | Synonyms: ectozoan |
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| equestrian | (adjective) of or relating to or featuring horseback riding | - |
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| (adjective) of or relating to or composed of knights | - |
| euclidean | (adjective) relating to geometry as developed by Euclid | Synonyms: euclidian |
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| euclidian | (adjective) relating to geometry as developed by Euclid | Synonyms: euclidean |
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| eutherian | (adjective) of or relating to or belonging to the subclass Eutheria | - |
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| fabian | (adjective) using cautious slow strategy to wear down opposition; avoiding direct confrontation | - |
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| freshman | (adjective) used of a person in the first year of an experience (especially in United States high school or college) | Synonyms: first-year |
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| gargantuan | (adjective) of great mass; huge and bulky | Synonyms: elephantine, giant, jumbo |
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| herculean | (adjective) extremely difficult; requiring the strength of a Hercules | - |
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| (adjective) displaying superhuman strength or power | Synonyms: powerful |
| hominian | (adjective) characterizing the family Hominidae, which includes Homo sapiens as well as extinct species of manlike creatures | Synonyms: hominid |
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| human | (adjective) having human form or attributes as opposed to those of animals or divine beings | - |
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| (adjective) characteristic of humanity | - |
| (adjective) relating to a person | - |
| humanitarian | (adjective) of or relating to or characteristic of humanitarianism | - |
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| (adjective) marked by humanistic values and devotion to human welfare | Synonyms: human-centered, human-centred, humanist, humanistic |
| infrahuman | (adjective) belonging to a group below humans in evolutionary development | - |
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| inhuman | (adjective) without compunction or human feeling | Synonyms: cold-blooded, cold, insensate |
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| (adjective) belonging to or resembling something nonhuman | - |
| insectan | (adjective) of or relating to the class Insecta | - |
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| isopteran | (adjective) relating to or characteristic of insects of the order Isoptera | - |
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| isthmian | (adjective) of or relating to or forming an isthmus | - |
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| labyrinthian | (adjective) resembling a labyrinth in form or complexity | Synonyms: labyrinthine, mazy |
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| lacertilian | (adjective) of or relating to lizards | Synonyms: saurian |
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