Definition of 'suck up'

Verb

1. take in, also metaphorically; "The sponge absorbs water well"; "She drew strength from the minister's words"
      Synonyms: absorb suck imbibe soak up sop up draw take in take up
2. ingratiate oneself to; often with insincere behavior; "She is playing up to the chairman"
      Synonyms: cozy up cotton up shine up play up sidle up
3. try to gain favor by cringing or flattering; "He is always kowtowing to his boss"
      Synonyms: fawn toady truckle bootlick kowtow kotow

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