suck up
• behave obsequiously, especially for one's own advantage.
• "he has risen to where he is mainly by sucking up to the president"
Similar:
grovel,
creep,
toady,
kowtow,
bow and scrape,
play up,
truckle,
fawn on,
curry favour with,
dance attendance on,
bootlick,
lick someone's boots,
be all over,
fall all over,
butter up,
rub up the right way,
keep sweet,
lick/kiss someone's arse,
lick/kiss someone's ass,
suck-up
noun
• a person who behaves obsequiously, especially for their own advantage.
suck it up
• accept something unpleasant or difficult.