four oh four

noun

a naive or clueless person.

“Yup, clueless in Seattle, a 404 if I ever saw one.”

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Meanings

nounfour oh four (plural four oh fours)

plural four oh fours

  1. USslanga naive or clueless person.

    Yup, clueless in Seattle, a 404 if I ever saw one.

Origin

From the Internet HTTP error code 404 (Not Found).

Full word history & related roots →
Cite this entry
APA

four oh four. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/four%20oh%20four

MLA

“four oh four.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/four%20oh%20four. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “four oh four,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/four%20oh%20four.

Source: four oh four on Wiktionary, CC BY-SA 4.0.