If you have dreamed of washing your mouth in a dream: You need to make some changes, you may want to make a start for the things you hope for. To wash your mouth in your dream refers to getting good news that you will be happy about, smiling, realizing your plans, not gossiping about anyone, and good developments. Washing your mouth and spitting in your dream is interpreted as regretting your sins and living a good life by repenting.