knuckle-duster (noun) brass knuckles: metal covering for fingers
Sinonime: appalling,
awful,
bad, beastly,
detestable,
disgusting,
dreadful,
execrable, foul, godawful, grody, gross*,
horrible,
horrid, horrifying, icky, loathsome, noisome,
obscene, repulsive, rotten, sickening,
terribleAntonime: inoffensive