Synonyms of suck up

Verb

1. absorb, suck, imbibe, soak up, sop up, suck up, draw, take in, take up

usage: take in, also metaphorically; "The sponge absorbs water well"; "She drew strength from the minister's words"

2. cozy up, cotton up, shine up, play up, sidle up, suck up, ingratiate

usage: ingratiate oneself to; often with insincere behavior; "She is playing up to the chairman"

3. fawn, toady, truckle, bootlick, kowtow, kotow, suck up, flatter, blandish

usage: try to gain favor by cringing or flattering; "He is always kowtowing to his boss"