clean sth up

— Phrasal Verb with clean

/kliːn/ verb

Definition

› informal to stop illegal and dishonest activity in a company, system, etc.: Last week the Government announced plans to clean up the mortgage industry. After the scandal, a team of marketing specialists was hired to clean up the company's image.

› ENVIRONMENT to remove harmful substances or chemicals from a place or the environment: clean up pollution/contamination/waste $250 million was spent on cleaning up groundwater contamination at the former factory's site.

(Definition of clean sth up from the Cambridge Business English Dictionary © Cambridge University Press)