Athanasian Creed. Quicunque, Quicunque vult.

athlete, n. gymnast, pancratist.

athletic, a. gymnastic, agonistic, pancratic; stalwart, muscular,
able-bodied, brawny, lusty.

athletics, n. pl. gymnastics, athletism. Associated Words:
agonistics, stadium.

atom, n. monad, molecule, particle, bit, iota, grain, scrap,
scintilla.

atomic, a. molecular.

atonable, a. expiable. Antonyms: unatonable, inexpiable.

atone, v. expiate.

atonement, n. expiation, amends, reparation, propitiation.

atoning, a. expiatory, propitiatory.

at short notice. summarily, promptly.

atrocious, a. heinous, flagitious, nefarious, felonious, infamous,
outrageous.

atrocity, n. heinousness, enormity, nefariousness, flagrancy, crime,
outrage.