Disconcert

(14), v. t. [imp. & p. p. DISCONCERTED; p. pr. & vb. n. DISCONCERTING.] [Prefix dis and concert, q. v.; O. Fr. desconcerter, Fr. déconcerter.]

1. To break up the harmonious progress of; to throw into disorder; to frustrate; as, the emperor disconcerted the plans of his enemy.
2. To throw into confusion; to disturb the composure or self-command of; to discompose; to abash.

Far from being overcome, never once disconcerted. Bp. Porteus. Syn.—To discompose; derange; ruffle; confuse; disturb; defeat; frustrate.