Top Definition
Someone who spreads grumpyness like a fungus. Usually a gross, annoying person.
Danielle is such a grumpfungus, seriously she just puts me in such a bad mood.
#grumpmuffin #grump #grumpfungi #fungus #grumper
by GRUMPFUNGUS September 23, 2009
5 Words related to Grumpfungus
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.