yallah Share definition Flag Arabic word for come on! or Let's Go! Used by people who have lived in the arab world in any contact. Yallah, let's go! Yallah, I'm waiting! Ok, I'll talk to you later. Yallah, bye. yallah by aline August 7, 2003 0 0 Get merch Get the yallah mug. Buy Now — $32.95 See more merch