live in sin

live in sin idiom
Cohabit outside marriage, as in Bill and Anne lived in sin for years before they got married. This term, dating from the early 1800s, is mostly used in a jocular fashion today, when customs and views are more liberal in this regard. Also see live together.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.