'Played the Harlot' in the Bible

They say, If a man puts away his wife, and she goes from him, and becomes another man's, may he return unto her again? shall not that land be greatly polluted? but you have played the harlot with many lovers; yet return again to me, says the LORD.

The LORD said also unto me in the days of Josiah the king, Have you seen that which backsliding Israel has done? she has gone up upon every high mountain and under every green tree, and there has played the harlot.

And I saw, when for all the causes for which backsliding Israel committed adultery I had put her away, and given her a bill of divorce; yet her treacherous sister Judah feared not, but went and played the harlot also.