argumenti causâ (L.), for the sake of argument.
argumentum ab inconvenienti (L.), argument from the inconvenient.
argumentum ad crumenam (L.), argument to the purse.
argumentum ad rem (L.), argument to the purpose.
argumentum baculinum (L.), the argument of the stick, club-law—the ultimate appeal.
Aristides (Gr.), an embodiment of justice, from the figure in ancient Greek history.
Aristippus (Gr.), an embodiment of self-indulgence, from the founder of the Cyrenaic school of philosophy.
ariston men hydor (Gr.), nothing like water.
ariston metron (Gr.), the middle course is the best: the golden mean.
arrectis auribus (L.), with ears pricked up.