| DUMB | Deaf Understand Much Better 
| Others |
| DUMB | DEEEEEEP Underground Military Base
| Others |
| DUMB | Deep Underground Military Base
| Others |
| DUMB | Deep Underground Military Bunker
| Others |
| DUMB | Deep Underground Millitary Bases
| Others |
| DUMB | Deliberately Underachieving Makeshift Ballteam
| Others |
| DUMB | Diabolically Uncrashable MUD Builder
| Others |
| DUMB | Direct Underground Military Base
| Others |
| DUMB | Doable Uncompromising Manageable and Beneficial
| Others |
| DUMB | Donuts Under My Bed
| Others |
| DUMB | Dreamy Unrealistic Motivating and Bold
| Others |
| DUMB | Duke University Marching Band
| Others |
| DUMB | Dutifully Underachieving Machiavellian Braggart
| Others |
| DUMB | Dynamic Universal Music Bibliotheque
| Others |