| A | B |
| antiseptic | anything that destroys or refrains the growth of purtrefactive micro-organisms |
| antislavery | opposed to human slavery |
| antispasmodic | tending to prevent or relieve non-inflammatory spasmodic affections |
| antistrophe | the inversion of terms in successive classes, as in the home of the joy and the joy of home |
| antitoxin | a substance whcih neutralizes the poisonous products of micro-organisms |
| antonym | a word directly opposed to another in meaning |
| anxious | distressed in min respection soem uncertain matter |
| apathy | insensibility to emotion or passionate feeling |
| aperture | hole |
| apex | the highest point, as of a mountain |
| aphorism | proverb |
| apiary | a place where bees are kept |
| apogee | the climax |
| apology | adisclaimer of intentional error or offense |
| apostasy | a total departure from one's faith or religion |
| apostate | false |
| apostle | any messenger commissioned by or as by divine authority |
| apthecary | one who keeps drugs for sale and puts up prescriptions |
| apotheosis | deification |
| appall | to fill with dismay or horror |
| apparent | easily understood |
| apparition | ghost |
| appease | to soothe by quieting anger or indignation |
| appellate | capable of being appealed to |
| appellation | the name or title by which a particular person, class, or thing is called |
| append | to add or attach, as something accessory, subordinate, or supplementary |
| appertain | to belong, as by right, fitness, associtation, classification, possession, or natural relation |
| apposite | appropriate |
| apposition | the act of placing side by side, together, or in contact |
| appraise | to estimate the money value of |
| appreciable | capable of being discerned by the senses or intellect |
| apprehend | to make a prisoner of a person in the name of the law |
| apprehensible | capable of being conceived |
| approbation | sanction |
| appropriate | suitable for the purpose and circumstances |
| aqueduct | a water-conduit, particularly one for supplying a community from a distance |
| aqueous | of , pertaining to, or containing water |
| arbiter | one chosend or appointed, by mutual consent of parties in dispute, to decide the matters |
| arbitrary | fixed or done capriciously |
| arbitrate | to act or give judgment as umpire |
| arbor | a tree |
| arboreal | of or pertaining to a tree or trees |
| arborescent | having the of a tree |
| arboretum | a botanical garden or place devoted to the cultivation of trees or shrubs |
| arboriculture | the cultivation of trees or shrubs |
| arcade | a vaulted passageway or street; a roofed passageway having shops, etc.; opening from it |
| archaic | antiquated |
| archaism | obsolescence |
| archangel | an angel of high rank |
| archbishop | the chief of the bishops of an scclesiastical province in the Greek, Roman, and Anglican church |
| archdeacon | a high official administrator of the affairs of a diocese |
| archaeology | the branch of anthropology concerned with the systematic investigation of the relics of man |
| archetype | protoype |