suck up (to (someone))

to praise someone in order to win their approval or good opinion.

She's always sucking up to the boss, telling him how wonderful he is.

• frame of mind
• Frankenstein's monster
• fray around the edges
• fray at the edges
• frayed tempers
• freak out
• freak someone out
• free agent
• free and clear
• free and easy
• free-for-all
• free ride
• free spirit
• freeze out
• freeze out someone
• freeze out something
• French leave
• French letter
• freshen up
• freshen up something
• freshen yourself up
• fresh from
• fresh from something
• fresh from somewhere
• fresh out of