atrevido, -a, bold.
atrocidad, f., absurdity, nonsense.
atroz, atrocious, fearful.
aturdir, to confuse, bewilder, rattle.
aumento, m., increase.
aun, aún, even, still; —cuando, although; ni —, not even.
aunque, although.
ausentarse, to absent oneself, be away.
autor, m., author.
autoridad, f., authority.