suck up to (one)

To seek the approval, attention, or support of others, especially superiors, through abject subservience, flattery, or fawning. I'm not doing well at all in math this year, so it seems like sucking up to the teacher is my only hope for a good grade! Don't suck up to me with chocolates and sweet talk—just tell me what you want!

suck up to someone

Sl. to attempt to gain influence with or favor from someone. In school, Richard was always sucking up to the teacher. Don't suck up to me. It won't do any good.

suck up to

Behave obsequiously towards, ingratiate oneself with, as in Now that he's the boss they're all sucking up to him, hoping to get big raises. [ Vulgar slang; mid-1800s]

suck up to someone

in. to attempt to gain influence with or favor from someone. Don’t suck up to me. It won’t do any good.