humorous

to live with someone that you are having a sexual relationship with but are not married to.

Last I heard they'd moved in together and were living in sin. (usually in continuous tenses)

• put the wind up
• put the wind up someone
• put thinking cap on
• put through
• put through hell
• put through hoops
• put through paces
• put through something
• put through their paces
• put through the mill
• put through the wringer
• put to bed
• put to death
• put too fine a point on it
• put to shame
• put to sleep
• put to the test
• put toward
• put toward something
• put two and two together
• put two and two together and get five
• put two and two together and make five
• put two cents in
• put two cents worth in
• put two fingers up at