perturb
verbNAmE//pərˈtərb//
perturb somebody (formal)Verb Forms present simple I / you / we / they perturb he / she / it perturbs
past simple perturbed
-ing form perturbing
adjective a perturbed young man perturbed at/about something She didn't seem perturbed at the change of plan. opposite unperturbedSee perturb in the Oxford Advanced Learner's Dictionary
Check pronunciation: perturb