Disconcert :: Disconcert (v. t.) To break up the harmonious progress of; to throw into disorder or confusion; as, the emperor disconcerted the plans of his enemy..
Disconcert :: Disconcert (v. t.) To confuse the faculties of; to disturb the composure of; to discompose; to abash.
Disconcert :: Disconcert (n.) Want of concert; disagreement.