Your mouth has some hidden horns, and if you have the right alcohol measurement in your body, those horns will come out of your mouth in the form of rumors and gossip.
When you start to tell a rumor or spread gossip, you're a little drunk, so you slur you words. "Ooo I saw (うわさ)..." is how you start every rumor. It's got some southern drawl to it almost (Uuuwahsahw).
Currently there are no similar looking kanji which exist in the WaniKani learning system