Noun: two-timer 'too,tI-mu(r)
- Someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else
"She discovered her boyfriend was a two-timer when she found messages from another woman on his phone"
- A person who says one thing and does another
"a drifting two-timer";
- double-crosser, double-dealer, betrayer, traitor
Derived forms: two-timers