From Longman Dictionary of Contemporary Englishshake somebody/something ↔ off phrasal verb1 GET RID OFto get rid of an illness, problem etc I can’t seem to shake off this cold.shake off your image/reputation as something Outside investment has helped Sheridan to shake off its image as a depressed industrial town.2 ESCAPEto escape from someone who is chasing you I think we’ve shaken them off. → shake→ See Verb table
Examples from the Corpus
shake off• Florence put her hand on mine but I shook it off.• He shook my hand like to shake it off.• But he shook it off and came forward again.• I shook her off and staggered out of the office, down the stairs and into the lobby.• He shook the dream off him.• McMurphy shook him off like a bull shaking off a monkey, but he was right back.• You want to shake him off like a wasp on a sunny day.• She screamed and grabbed for his whip arm; he shook her off without even looking at her. 