Search Result for "two-timer": 
Wordnet 3.0

NOUN (2)

1. someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else;

2. a person who says one thing and does another;
[syn: double-crosser, double-dealer, two-timer, betrayer, traitor]



WordNet (r) 3.0 (2006):

two-timer
    n 1: someone who deceives a lover or spouse by carrying on a
         sexual relationship with somebody else
    2: a person who says one thing and does another [syn: double-
       crosser, double-dealer, two-timer, betrayer,
       traitor]