auditque vocatus Apollo (L.), and Apollo listens when invoked.
au fait (Fr.), well acquainted with a matter: expert.
aufgeschoben ist nicht aufgehoben (Ger.), put off is not given up.
au fond (Fr.), at the bottom.
auf wiedersehen! (Ger.), till we meet again, good-bye!
au grand sérieux (Fr.), in all seriousness.
au gratin (Fr.), after the style of gratin, i.e. brown—fish cooked in this way being covered with bread-crumbs and browned in an oven, &c.
aujourd'hui roi, demain rien (Fr.), to-day king, to-morrow nothing.
au jour le jour (Fr.), from day to day, from hand to mouth.
au levant (Fr.), towards the east.