Meaning of “shake something up” in the English Dictionary

american-english dictionary

"shake something up" in American English

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shake something up

phrasal verb with shake us /ʃeɪk/ verb past tense shook /ʃʊk/ , past participle shaken /ˈʃeɪ·kən/

(CAUSE CHANGE)

to cause changes to something, esp. in order to make improvements:

He’s running for senator as an outsider who will shake things up.

(Definition of “shake something up” from the Cambridge Academic Content Dictionary © Cambridge University Press)