Mostester means: The most important word is one that has more meanings than others. Most, Moster and Mostester are the most common words. This word can be used in daily arguments, to express your feelings for someone, how much you love them, and even describe the way that you feel about something. (in Community Dictionary, added by Mudpuppy)
What else does Mostester mean?
- It is more than the most,moster and mostest. This is what makes it the mostester. It is the most important thing in all of the shabang. (in Community Dictionary, added by Ezequiel Gallardo)