WordWeb Online

1. Having your composure disturbed
   "looked about with a wandering and discomposed air"

1. Cause to lose one's composure
   "Persons frequently employ falsehoods to a sick man who cannot recover, lest it should discompose his mind";
   - upset, untune, disconcert, discomfit

See also: abashed, ablush, agitated, blushful, blushing, bothered, chagrined, chagrinned, daunted, discombobulated, disconcerted, embarrassed, erubescent, fazed, flushed, flustered [informal], hot and bothered [informal], perturbed [informal], rattled [informal], red-faced, thrown, undignified, unstrung

Type of: arouse, elicit, enkindle [literary], evoke, fire, kindle, provoke, raise

Antonym: composed