fifteensome

plural fifteensomes

1. rareA group of fifteen people or things.

   There would be an excellent chance that all of us would be in one hollering, protesting, club-slinking fifteensome, betting $800 million.

   2015, Dan Jenkins, The Dogged Victims of Inexorable Fate, Simon & Schuster, →ISBN

   2 more examples

   It was one of those magical evenings during which our threesome became a fifteensome, including the pianist and Cuban expatriates from Puerto Rico, Mexico the U.S.

   1998, George Jacunski Guiteras, “A Return to Cuba”, in Assembly, volume 57, page 23

   In this week’s episode of “Is it in Yet?”, The Tab’s sex podcast we’ve heard from lots of naughty listeners who’ve somehow ended up having spontaneous threesomes, foursomes, and even – yes – a fifteensome.

   2020 March 12, “‘Our first date ended in a foursome’: Group sex stories that actually happened”, in The Tab