bare-knuckle

adjective

1. (of a prizefight, prizefighter, etc.) without boxing gloves; using the bare fists.
2. without conventional niceties; rough-and-tumble.

adverb

3. without boxing gloves.
4. in a rough-and-tumble manner.

adjective

1. without boxing glovesa bare-knuckle fight
2. aggressive and without reservationsa bare-knuckle confrontation