bare-knuckle 
(also bare-knuckled)
adjective
1(Of a boxer or boxing match) without gloves.The art dealer Victor Waddington had an eye with a slightly lowered lid, apparently the result of a bare-knuckle boxing match fought for the prize money to embark upon his chosen career....
- He probably would have been more at home refereeing at a bare-knuckle boxing match - or calling time in a seedy East End pub.
- ‘The film was called King of the Gypsies and it told the true story of Bartley Gorman, a bare-knuckle boxer born in (my home town of) Uttoxeter,’ explains Meadows.
1.1 informal With no scruples or reservations: an apostle of bare-knuckle capitalism...
- Japan has taken the gloves off for a bare-knuckle fight with China to claim the title of leading economic power in South-east Asia.
- Bremner's gloves now came off and his bare-knuckle attack on Blair, playing poodle to the Campbell's Rottweiler, grew blatantly more brutal.
- This is carparking with the gloves off, so to speak; bare-knuckle stuff.