Word.ws English Dictionary

four oh four

four oh four noun: a naive or clueless person.

Noun

four oh four (plural four oh fours)

  1. (US, slang) a naive or clueless person.
    • Yup, clueless in Seattle, a 404 if I ever saw one.

Forms of four oh four

pluralfour oh fours

Origin of four oh four

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

Questions about four oh four

What does four oh four mean?
Four oh four means a naive or clueless person.
What part of speech is four oh four?
Four oh four is a noun.
What is the plural of four oh four?
The plural of four oh four is four oh fours.

Words near four oh four in the dictionary

  1. four o'clock
  2. four o'clock flower
  3. four o'clock flowers
  4. Four Oaks
  5. four of a kind
  6. four oh four
  7. four oh fours
  8. Four Olds
  9. four on the floor
  10. four one one
  11. four penny nail

Source and license

Adapted from Wiktionary: four oh four (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: En-au-four oh four.ogg.

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