Everyone knows that Aloha is Hawaiian for hello and goodbye. But unless you have been to Hawaii, you may not know that Mahalo is Hawaiian from thank you. The problem with this word is that it is so overused that it feels required. When traveling in touristy areas and going into stores, every time you leave, the clerk says Mahalo. But they say it in a flat, monotone way that does not show that they care you crossed their threshold.