Meaning of MU
What Does MU Mean? (Using MU Online)MU means "Multi User".
Summary of Key Points
Definition for MUMU means "Multi User". This is the most common definition for MU on Snapchat, WhatsApp, Facebook, and Twitter. Here is some more information about MU:
Adults and Teenagers
A Text with MU
Using MU on a Cell Phone (SMS Texts, Whatsapp, and Yubl)