(cause to) commit fornication, X continually, X great, (be an, play the) harlot, (cause to be, play the) whore, (commit, fall to) whoredom, (cause to) go a-whoring, whorish

“Fornication” From Boyd’s Bible Dictionary:

(crime under the arch). Crime of impurity between unmarried persons. Figuratively, infidelity to God (Ezek. 16:2; Jer. 2:20; Matt. 5:32).

“Harlot” From Boyd’s Bible Dictionary:

(vagabond). An abandoned woman (Gen. 38:15). Harlotry forbidden (Lev. 19:29). Type of idolatry (Isa. 1:21; Ezek. 16). Classed with publicans (Matt. 21:32).

“Fornication” From Concise Bible Dictionary:

This was very common among the Gentiles, which accounts for its being mentioned in the message sent from the conference at Jerusalem to the Gentiles (Acts 15:20, 29); and its being so often prohibited in the epistles. The word is sometimes used where “adultery” is the sense (Matt. 5:32; Matt. 19:9). It often has in the O. T. a symbolical reference to the turning from God to idols (2 Chron. 21:11, 13; Isa. 23:17; Ezek. 16:15, 26, 29); and in the N. T. to unfaithful intercourse with Babylon, the mother of harlots (Rev. 14:8; Rev. 17:2, 4; Rev. 18:3, 9).

“Harlot” From Concise Bible Dictionary:

A woman given up to fornication: there were such as early as Genesis 38:15. The term is used metaphorically for unfaithfulness: “how is the faithful city become an harlot!” (Isa. 1:21; Ezek. 16:31,35). The mystic Babylon is designated “The mother of harlots” (Rev. 17:5), not only unfaithful herself, but the mother of such.

Strong’s Dictionary of Hebrew Words:

Transliteration:
zanah
Phonic:
zaw-naw’
Meaning:
a primitive root (highly-fed and therefore wanton); to commit adultery (usually of the female, and less often of simple fornication, rarely of involuntary ravishment); figuratively, to commit idolatry (the Jewish people being regarded as the spouse of Jehovah)
KJV Usage:
(cause to) commit fornication, X continually, X great, (be an, play the) harlot, (cause to be, play the) whore, (commit, fall to) whoredom, (cause to) go a-whoring, whorish