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1.
Word to describe someone who is whining, being bad-tempered and generally sulky. Of West Yorkshire origin.
She's not had any sleep and she's hungry, that's why she's being maungy
by amyn92 September 01, 2010
 
2.
of dull ill-defined colour, usually of the greyish, brownish, purplish or greenish tones, tending to give a depressive, unattractive appearance.
I didn't like her dress: it was really maungy.
by fillkay April 21, 2011