swinger

One that swings.

A person who actively seeks excitement and moves with the latest trends.

A person who engages freely in promiscuous sex.

A member of a couple, especially a married couple, who exchanges sexual partners.

One who or that which swinges.

Anything very great or astonishing; a stunner; hence, a bold lie; a whopper.

One who or that which swings.

One who swinges.

Anything very large, forcible, or astonishing.