noun

1. One who uses obsequious compliments to gain self-serving favor or advantage from another; a servile flatterer.

2. One who seeks to gain through the powerful and influential.

3. An informer; a talebearer.

Synonyms: ass-kisser, brown noser, suck up, yes man, flunky, lackey, parasite

verb

1. To inform against; hence, to calumniate.

2. To play the sycophant toward; to flatter obsequiously.