English edit

Etymology edit

two-time +‎ -er

Noun edit

two-timer (plural two-timers)

  1. A person who two-times another.
    Synonyms: see Thesaurus:cuckolder
    • 1972, Donald Fagen, Walter Becker (lyrics and music), “Do It Again”, performed by Steely Dan:
      When you know she's no high climber / Then you find your only friend / In a room with your two timer / And you're sure you're near the end