Dictionaries:

suck up to:

To behave in a sycophantic manner; to flatter and fawn over someone.
See Also: butterfly flick, cock-sucking, dermagraphism, DSL, fellare, FUBAR, lip-sucking kiss, nose to hose, scrotilinctus, scrotilingus, Snafu, suck, tea bagging, tit puller, up and down

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