Definition of suck up in English:

suck up

phrasal verb

informal
  • Behave obsequiously, especially for one's own advantage.

    ‘he has risen to where he is mainly by sucking up to the president’
    • ‘They're just sucking up to their own bosses, their own lusts.’
    • ‘In a grand gesture of sucking up, I offered them my lunch to pillage.’
    • ‘She has discovered that the Right pays a hell of a lot better than the Left, and is promoting her own fortunes as fast as she can by sucking up.’
    • ‘Every waiter and waitress sucks up as much as humanly possible, assuming that that's the way to earn a nice gratuity.’
    • ‘There is no time for jealousy: you have much sucking up to do.’
    • ‘Later on, Bobby sucks up to Izzy and tells her he has a big opportunity and wants her advice.’
    • ‘He was just sucking up to the hippie establishment, trying to be cool.’
    • ‘He sucks up to the fat cats; they wrinkle their noses and hand him the check using a pair of tongs.’
    • ‘Because, as everyone knows, celebrities are for sucking up to only.’
    • ‘After about a minute of sucking up and butterfly kisses, he gave in.’
    grovel, creep, toady, be obsequious, be servile, be sycophantic, kowtow, bow and scrape, play up, truckle
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