Meaning of “shake sth off” - Learner’s Dictionary

shake sth off

phrasal verb with shake uk us /ʃeɪk/ verb (past tense shook, past participle shaken)

to get rid of an illness or something that is causing you problems:

I hope I can shake off this cold before the weekend.

(Definition of “shake sth off” from the Cambridge Learner’s Dictionary © Cambridge University Press)