Meaning of PERTURB in English

PERTURB

/ pəˈtɜːb; NAmE pərˈtɜːrb/ verb

[ vn ] ( formal ) to make sb worried or anxious

SYN alarm :

Her sudden appearance did not seem to perturb him in the least.

►  per·turbed / -ˈtɜːbd; NAmE -ˈtɜːrbd/ adjective perturbed (at / about sth) :

a perturbed young man

She didn't seem perturbed at the change of plan.

OPP unperturbed

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WORD ORIGIN

late Middle English : from Old French pertourber , from Latin perturbare , from per- completely + turbare disturb.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.