Adjective below the belt has 1 sense
  1. below the belt - disregarding the rules (from the notion of an illegal low blow in boxing); "her accusations were below the belt"
    Antonyms:
    fair, just (indirect, via unfair)
,Adverbial below the belt has 1 sense
  1. unfairly, below the belt - in an unfair manner; "they dealt with him unfairly"; "their accusations hit below the belt"
,
TOP