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1. Take in, also metaphorically
   "The sponge sucks up water well";
   - absorb, suck, imbibe, soak up, sop up, draw, take in, take up
    
2. Ingratiate oneself to; often with insincere behaviour
   "She is sucking up to the chairman";
   - cozy up [N. Amer], cotton up [archaic], play up [informal], cosy up [Brit, Cdn]
    
3. [informal] Try to gain favour by cringing or flattering
   "He is always sucking up to his boss";
   - fawn, toady, truckle, bootlick [informal], kowtow, kotow, smoodge [Austral, informal]

Derived forms: sucking up, sucked up, sucks up

Type of: blandish, flatter, ingratiate

Encyclopedia: Suck up, kick down