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1.
Literally, a half of a party.

Consists of a small gathering of people, usually close friends of the host, getting together to have a good time.

Not as intense as a full on party, but a party nonetheless.
Tyler had a semi party together down at his house last weekend. About seven people enjoyed the pool, some video games, and all around douchebaggery.
by Smitty Joe June 10, 2006

Words related to Semi Party

box social douchebaggery not quite a party party semi