brown-nose - definition and synonyms

verb [intransitive/transitive] informal, showing disapproval 

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present tense
I/you/we/theybrown-nose
he/she/itbrown-noses
present participlebrown-nosing
past tensebrown-nosed
past participlebrown-nosed
  1. to try very hard to please someone important or powerful, for example by agreeing with them all the time, in a way that annoys other people

derived word

brown-nosing

noun [uncountable]