audacious

adj. 大胆的，愚勇的

attribute, attribution, attributive, attributively, attrition, attune, Atty-Gen, atypical, atypically, au fait, au fond, au gratin, au pair, au revoir, aubergine, aubrietia, auburn, auction, auction bridge, auctioneer, audaciously, audacity, audibility, audible, audibly, audience, audio, audio frequency, audio typist, audio-, audio-visual, audit, audition, auditor, auditorium, auditory, Aug, auger, aught, augment,