cajole
to urge with repeated appeals, teasing, flattery
The sweet-talking senior cajoled an impressionable junior into seeing Lord of the Rings for the tenth time.
chicanery
trickery
The candidate accused his debate opponent of resorting to cheap chicanery to sway the electorate.
obsequious
fawning and servile
Kevin was obsequious that even his teachers were embarrassed; as a result, his sucking up rarely led to better grades.
sycophant
insincere, obsequious flatterer
Siggie is such a sycophant; he slyly suck up to his teachers and reaps the rewards of his behavior.