aut insanit homo aut versus facit (L.), either the man is mad or he is making verses.
aut inveniam viam aut faciam (L.), I shall either find a way or make one.
aut non tentaris aut perfice (L.), either do not attempt or else achieve.
auto (Sp.), an act: a drama: an auto-da-fé.
aut prodesse volunt aut delectare poetæ (L.), poets seek either to profit or to please.
autrefois acquit (law French), previously acquitted.
autrefois convict (law French), previously convicted.
aut ragem aut fatuum nasci oportet (L.), it behoves one to be born either king or fool.
autres temps, autres mœurs (Fr.), other times, other manners.
au troisième (Fr.), on the third [floor].