atontar, to stun, stupefy.
atormentar, to torment.
atracción, f., attraction.
atrás, behind.
atrever, refl., to dare, venture.
atrevimiento, m., boldness.
atropellar, to fall, descend, lower; refl., hasten, crowd.
aturdir, to be astounded.
aumentar, to augment, increase.
aún, aun, still, yet, even.