When two or more women in a household are synchronized with their menstrual cycles.
I have to get out of the house this weekend. My wife and daughter are monsterating.
by jeff74008 March 01, 2012
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When a woman's time of the month makes her extremely grumpy/angry/hungry. Inspired by "Modern Family".
Luke: Did you see Alex cry about the commercial, then scream at me for not bringing her enough ice cream?
Phil: Yea she's totally monsterating right now, stay away.
by ChiliBoy March 07, 2012
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A person who demonstrates skills beyond normal mastery, particularly in the field of music.
"Did you hear that guitar solo? That guy's a monster!"
by Didjerridon't February 03, 2013
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{adjective}: A term used to describe an act or an individual that is badass, hardcore, gnarly, ill, savage, or rad.
"That jump was so monster!"

"Keep it monster, man"
by noniG December 21, 2009
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