attrītus, see atterō.
attulī, see adferō.
auctor, ōris [augeō], m., producer, originator, cause.
auctōritās, ātis [auctor], f., authority, power; influence, weight, dignity.
auctus, a, um, see augeō.
audāx, ācis [audeō], adj., bold, daring, audacious.
audeō, ēre, ausus sum, to dare, attempt.
audiō, īre, īvī, ītus, to hear, hear of, listen to. ob—oboediō, īre, īvī, ītus, to give ear to, hearken, listen; yield.
audītōrium, ī [audiō], n., a lecture hall.