below the belt

Adjective below the belt has 1 sense

• below the belt(s = adj.all) - disregarding the rules (from the notion of an illegal low blow in boxing); "her accusations were below the belt"

Adverbial below the belt has 1 sense

• below the belt(r = adv.all) unfairly - in an unfair manner; "they dealt with him unfairly"; "their accusations hit below the belt"