brownnoser
/ˈbraʊn.noʊ.zɚ/
noun
- A person who tries to win favor from someone in authority by flattering them excessively.
- She's such a brownnoser — she laughed at every joke the principal told.
- The office brownnoser always volunteers to stay late when the boss is watching.
- Real brownnosers are easy to spot because they never disagree with anyone important.