Top definition
Along the lines of kthxbye. A quick and rude denial/rejection of whatever was asked or offered.
Guy: hey what r u doin 2nite? wanna watch LOTR ROTK?
Girl: umno
by B March 31, 2005
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug