One who obtains benefit from a public good without paying for it directly.
A worker at an open shop who is able to enjoy the benefits negotiated by a union without being a member of the union.
Someone who obtains goods or services legally without paying.
The practice of giving empty flattery for personal gain.
A fawning toady; a base sycophant.
To play the toady; take the role of a lickspittle to please (someone).