átomo, m., atom, particle.
atónito, -a, astonished, amazed.
atractivo, m., charm, attraction.
atraer, to draw, attract, bring down.
atrás; back, backwards; — de, behind.
atravesar, to cross, traverse.
atreverse, to dare, venture, have the courage.
atrevido, -a, adj. pp. of atreverse, daring, bold, rash, audacious.
atrevimiento, m., boldness, rashness.
atribulado, -a, adj. pp. of atribular, afflicted, vexed, suffering.