Strong's Definition
adultery
STEPBible — Tyndale Abridged Hebrew Lexicon
נַאֲפוּף (na.a.phuph) — adultery. adultery
UBS Dictionary of Biblical Hebrew
noun m · נאף
Unfaithful | ≈ זְנוּנִים
adultery = action by which married humans have voluntary sexual intercourse with other humans who are not their husband or wife; ≈ often used as a metaphor for idolatry
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
[נַאֲפוּף] n.[m.] adultery;—only pl. sf. Ho 2:4 ref