Definition of doofus
: a stupid, incompetent, or foolish person
Examples of doofus in a sentence
Don't be such a doofus.
<I don't want to be partnered on the project with that doofus.>
Origin and Etymology of doofus
perhaps alteration of 1goof
First Known Use: 1960
DOOFUS Defined for English Language Learners
Definition of doofus for English Language Learners
: a stupid or foolish person
Seen and Heard
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