polish sth/sb off
informal— phrasal verb with polish uk/ˈpɒl.ɪʃ/us/ˈpɑː.lɪʃ/verb [ T ] 
to defeat a competitor easily:
Arsenal polished off Chelsea 5–0 in Saturday's match.
 San Fransisco polished off the injury-riddled Los Angeles Lakers.
Thesaurus: synonyms and related words
Winning and defeating
- annihilate
 - bank
 - be one in the eye for sb idiom
 - beat sb at their own game idiom
 - beat sb hollow idiom
 - outmanoeuvre
 - outpace
 - outperform
 - outscore
 - overpower
 - pip
 - reel
 - sew
 - sweep
 - trump
 - unassailable
 - unbeaten
 - undefeated
 - victorious
 - wipe
 
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