boot-licker

verb (used with object)

1. to seek the favor or goodwill of in a servile, degraded way; toady to.

verb (used without object)

2. to be a toady.

verb

1. informal to seek favour by servile or ingratiating behaviour towards (someone, esp someone in authority); toady

n.

also bootlicker, “toady, servile follower,” 1846, from boot (n.1) + agent noun from lick (v.). Foot-licker in the same sense is from 1610s.