This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A colloquial term for an inept or stupid person.

"A dufus is not a cretin, a moron, a dumbass -- just an otherwise sensible person who has, perhaps through naivety as much as foolishness, fucked up, allowed themself to be royally reamed."