When 2 people are in a relationship and a 3rd person is always hanging around whether wanted or not, and even if not the couple is too nice to tell the 3rd person they are intruding.
Holly can't seem to get a boyfriend so she hangs out with a real couple and forms a trupple.
by Jimmy Kantz July 06, 2014
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A group of three people. If there are four it is known as a trupple + 1 if someone tags along.
by Trupple November 26, 2019
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