monogamistic

In its Christian sense it is monogamistic and absolute, you are committing adultry if you remarry or fornicate with the exception of certain conditions.

We Need Men`s "Ishews" Newmania 2007

But whereas notable commentators are ready to concede that Keturah may have been taken during Sarah's lifetime, yet that would seem to conflict rather seriously with Abraham's pronounced monogamistic leanings; for he took Hagar only as a last resort to realize God's promise.

Exposition of Genesis: Volume 1 1892-1972 1942

By that time the occupant of the monogamistic harem would be in dreamland, the bulbul silenced and the hour propitious for slumber.

The Voice of the City: Further Stories of the Four Million O. Henry 1886

Non-marrieds can have children, sleep with whomsoever they wish, and also never have to answer to the narrow-minded keepers of the monogamistic myth. "wes p 46 minutes ago

Denver Post: News: Breaking: Local mogogo 2010