- to be unfaithful to (a lover or spouse).
- to double-cross.
Origin of two-time
Examples from the Web for two-timer
Today it would be considered a felony, classifying him as a “two-timer” and therefore ineligible for special release.A Million Ways to Die in Prison
December 8, 2014
- informal to deceive (someone, esp a lover) by carrying on a relationship with another
Word Origin and History for two-timer
"to deceive, cheat, betray," 1924, perhaps from notion of "to have two at a time." An earlier reference (1922) in a Kentucky criminal case and involves a double-cross or betrayal, without a romance angle. Related: two-timing (adj.); two-timer.