Definition of suck up

verb (v)

• take in, also metaphorically (verb.contact)

  Synonym: absorb, draw, imbibe, soak up, sop up, suck, take in, take up
  

  source: wordnet30
• ingratiate oneself to; often with insincere behavior (verb.emotion)

  Synonym: cotton up, cozy up, play up, shine up, sidle up
  

  source: wordnet30
• try to gain favor by cringing or flattering (verb.communication)

  Synonym: bootlick, fawn, kotow, kowtow, toady, truckle
  

  source: wordnet30

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