Arabic word meaning mother. When used as a prefex it means "mother of". Usually as a mark of respect to the woman.
Mother calling her young son:"Sami, come and take this dish of desserts to our neighbour Um Ali and thank her for her help with the shopping the other day"
by Kyle M. May 30, 2005
Get a um mug for your coworker Abdul.
Unintentional Masturbational Explosion.

A not uncommon phenomina, where during masturbation, the ejaculation occurs in an unintended fashion, and the 'man juice' spurts out in an explosion-like manner, splattering everywhere, including undesirable places i.e. desk, keyboard, face
I was having a wank last night when I had a UME, it went all over the computer!
by DudeyMcCool September 17, 2009
Get a UME mug for your bunkmate Nathalie.
an arabic word meaning mother.

um=mother
umak=your mother(to a male)
immy=my mother
immek=your mother(to a female)
imkun=your mothers
kuss(=your moms pussy) imak is nice
by Anonymous May 09, 2003
Get a um mug for your fish Zora.
When you say "no" with attitude or sass
Girl/Boy I don't like:Can I copy the 12 page homework
Me:um no
by k_19@rosebud September 23, 2018
Get the um no neck gaiter and mug.
A sound you make when you can't find the words you want to say but you have to make some kind of sound
5 year old: Lisa
Lisa: Yes child
5 year old: Why do my parents have sex after they yell at eachother?
Lisa:Um...
by SockWitch November 19, 2017
Get a Um... mug for your sister Rihanna.