#atravesar#, to cross, pass through.
#atreverse#, to make bold, dare.
#atrevido, -a#, bold.
#atribulado, -a#, troubled, in distress.
#aun, aún#, even, yet, still.
#aunque#, although.
#autor#, m. author.
#autorizar#, to grant permission.
#auxiliar#, to aid, help.
#auxilio#, m. aid.