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2 definitions by Josh Fahey

 
1.
(Adj.) Used to describe a dubious or made up word, term, or phrase that is entirely plausible because it makes logical sense within existing language conventions.

Ironically, the word comulent itself is not cromulent. (See incromulent)

Origin: Television writer David X. Cohen for The Simpsons episode 3F13, "Lisa the Iconoclast".
My friend didn't believe me when I told her that meese was the plural of moose, but she admitted that it was entirely cromulent.
by Josh Fahey April 11, 2008
 
2.
(Adj.) Used to describe a dubious or made up word, term, or phrase that does not makes logical sense within existing language conventions but may make sense in a cultural context.

Examples of incromulent words are
Meh: (interjection) Mediocre; lackluster; unexceptional; uninspiring.

Asshat: Obnoxious person.

A person, of either gender, whose behavior displays such ignorance/obnoxiousness that you would like to make them wear their own ass as a hat.

Origin: The antonym of the word cromulent
Asshat is such a stupid word that is entirely incromulent.
by Josh Fahey April 11, 2008