A Japanese onomatopoeia that represents the sound of something firm but pliant being squished.*

*From: Antifuchs' µblag
"It's yummy and sweet... It's really white and its really sweet and really unyuu!" --- Hinaichigo from the anime Rozen Maiden referring to soft rice cakes filled with strawberries--- from episode 3 :)
by Ayumu August 14, 2010
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Utsuho Reiuji's trademark onomatopia.
Known among 2hu fags.
Utsuho: *trips over something and falls* Unyuu !
by Marsawa June 21, 2018
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