To act unfaithfully, to trespass, to commit a violation
Brown-Driver-Briggs Hebrew Lexicon
1) to act unfaithfully, act treacherously, transgress, commit a trespass 1a) (Qal) to act unfaithfully or treacherously 1a1) against man 1a2) against God 1a3) against devoted thing 1a4) against husband