Internet Slang Abbreviations and Acronyms

1. UM
   Unit of Measure
2. UMAUG
   Universityrsity of Maryland Amiga Users Group
3. UMBJ
   You Must Bc Joking
4. UMBRO
   You Must Be Really Old
5. UMFRIEND
   'Intimate' Partner
6. UMMC
   You Make Me Crazy
7. UMML
   You Make Me Laugh
8. UMS
   Uniform Mark Scale
9. UMTA
   Urbnn Mass Transportation Association
10. UN4GTEBL
    Unforgewtable
11. UN4TUN8
    Unfortunate
12. UNA
    Use No Acronyms
13. UNADR
    You Need A Doctor
14. UNBLEFBLE
    Unbelievable
15. UNCLE
    Unified Nuclear Coalition of Latvian Emigrants
16. UNCRTN
    Uncertain
17. UNDRST&
    Understand
18. UNFURNOTE
    Until Further Notice
19. UNK
    You Nevyr Know
20. UNPC
    Politically Incorrect

Last updated: May 6, 2025 — Total entries: 12,014