Definition of "derp" in English

interjection

1. (slang) Draws attention to an act of foolishness or stupidity.

   • I put chips in my soup instead of crackers. Derp.

2. (slang) A placeholder for unimportant details, blah blah blah.

verb

1. (slang) To act stupidly or foolishly.

2. (slang) To make a stupid mistake.

3. (slang) To have one's eyes pointing in different directions; to exhibit strabismus.

noun

1. (slang) A person who acts stupidly or foolishly; a person who derps.

2. (slang) A stupid mistake, stupidity.

3. (uncountable) The constant repeating of an opinion after facts have proved it incorrect, especially as a rhetorical tactic.