umikawaii Share definition Flag Someone who think himself/herself is very pretty, likes to act cute and/or camwhore when he/she is in actual fact, not only not cute, but fucking ugly. LOL, look at the bitch's blog. there's so many photos of herself! It's so umikawaii. umikawaii by umikawaii September 4, 2010 0 0 Get merch Get the umikawaii mug. Buy Now — $32.95 See more merch