look up any word, like pussy:
 
1.
A person whom upon entering a room of people, has the innate ability to withdraw all feelings (both negative and positive) from those already present in the room. The effects of a mood-sucker on the recipients are depression, boredom and a complete lack of interest in all things to do with life in general.
The moment she entered the room, you could tell she was a mood-sucker.
by Etak_soda August 21, 2011
9 2