be unfaithful
Definition:
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
Definition:
properly, to cover up; used only figuratively, to act covertly, i.e. treacherously; transgress, (commit, do a) trespass(-ing).; a primitive root