third-wheel

English

Etymology

From third wheel.

Verb

third-wheel (third-person singular simple present third-wheels, present participle third-wheeling, simple past and past participle third-wheeled)

1. (transitive, intransitive) To act as a third wheel; to accompany two people on a date.
   • 2018 July 28, Dave Quinn, “Meghan Markle and Prince Harry 'Found Each Other to Change the World,' Says Couple's Pal”, in People‎^[1]:

     The Argentine polo star, Ralph Lauren model and personal pal to Harry was with the royal couple on Thursday as he and Harry’s polo team scored the winning trophy at the Sentebale ISPS Handa Polo Cup. He even third-wheeled the newlyweds as the pair shared a congratulatory kiss after the charity match, a hilarious moment caught by photographers.