v. 25B6; verb DISCOMPOSE, unnerve, upset, disturb, disquiet, perturb, discomfit, disconcert, alarm, dismay, trouble, bother, agitate, fluster, ruffle, shake (up), throw, unbalance, destabilize; informal rattle, faze.
UNSETTLE
Meaning of UNSETTLE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012