audaz, fearless, valient.
auditorio, audience.
augusto, grand, imposing, venerable, sacred.
aumentar, to increase.
aumento, increase; seguir en —, to continue to increase.
aun or aún, even, yet, still; ni aun, not even.
aunque, although, even if.
ausencia, absence.
austeridad, f., austerity, severity.
austero, stern.