The meaning of the Acronym MUM is...

MUM is

• Maintenance of Union Membership

More Meanings For MUM:

• Mother
• Quiet
• Crisanthemum
• Maharishi University of Management
• Maharishi University of Management
• Merge Using Moments
• My Ultimate Mentor
• Multi Universe Moo
• Maternity Unit Miracles
• Money Under Management
• Mixed Up Mother
• Murder under the Microscope
• Mass Memory Unit Manager
• Murder under the Microscope
• Caledonia - Mumford

MUM is also in:

• Accounting
• Chat
• FBI Files
• NASA
• Police
• Positions
• State and Local
• Unfiled
• Universities