suck up - definition and synonyms

phrasal verb [intransitive] informal
present tense
I/you/we/theysuck up
he/she/itsucks up
present participlesucking up
past tensesucked up
past participlesucked up
  1. showing disapproval to be very nice to someone in authority so that they will treat you well
    suck up to:

    Kristen is already sucking up to the new boss.

See also main entry: suck