What does UM stand for?

What does UM mean?

UM	The Ultra Mirage Business » Firms
UM	U Momma Miscellaneous » Unclassified
UM	Ubiquitous Museum Community » Museums
UM	Ukraine Mediterranean Miscellaneous » Unclassified
UM	Ukrainian Models Miscellaneous » Unclassified
UM	Ultimate Member Miscellaneous » Awards & Medals
UM	Ultra Maniac Community » Sports
UM	Undefeated Masters Community » Sports
UM	Under Medication Medical » Hospitals
UM	Unearthed Madness Miscellaneous » Unclassified
UM	Unfocused Moment Miscellaneous » Unclassified
UM	Unified Messaging Computing » Networking
UM	Uninsured Motorist Governmental » Transportation
UM	Unión Mallorquina International » Spanish
UM	Union Meeting Business » General
UM	Unique Manuka Miscellaneous » Unclassified
UM	Unit Manager Governmental » Military
UM	Unit of Measure Academic & Science » Electronics
UM	United Methodist Community » Religion
UM	Universal Machine Miscellaneous » Unclassified
UM	Universal Mediterranea Business » Firms
UM	Universal Message Community » Religion
UM	Universal Mgf Business » Firms
UM	University of Manitoba Academic & Science » Universities
UM	University of Miami, Florida Academic & Science » Universities

um(interj.): (used as an expression of doubt, hesitation, deliberation, etc.)