Moom is the noon of the night. Midnight is to moom as midday is to noon. It can be used when "midnight" is just too many syllables to get through.
by _drone_ April 15, 2019

by ben February 8, 2004

Stands for "Men's Opposite of Menstruation Syndrome"
A monthly cycle that men go through resulting in moodiness. The emotional male version of a period or PMSing without the physical aspects.
A monthly cycle that men go through resulting in moodiness. The emotional male version of a period or PMSing without the physical aspects.
by Bugmenot123123123 November 29, 2007

to be slightly saddened when you hear or experience something that you do not like or that has otherwise make you feel unhappy in some way.
by Mezzaj February 14, 2012

You know, if sometime tommorrow moom got into a car accident and died horribly while his children watched, I'd do nothing but laugh, because that'd be one less Hitler lover in the world.
by TallicaD00d October 12, 2004

I'm really tired, I think I'm just going to moom out for awhile.
Where is Kyle? Oh hes just moomin out on his couch.
Where is Kyle? Oh hes just moomin out on his couch.
by Derelicte25 April 10, 2008
