"four oh four" meaning in English

See four oh four in All languages combined, or Wiktionary

Noun

Audio: En-au-four oh four.ogg Forms: four oh fours [plural]
Etymology: From the Internet HTTP error code 404 (Not Found). Head templates: {{en-noun|head=four oh four}} four oh four (plural four oh fours)
  1. (slang, US) a naive or clueless person. Tags: US, slang
    Sense id: en-four_oh_four-en-noun-TiPmbG1c Categories (other): American English, English entries with incorrect language header, Pages with 1 entry, Pages with entries

Inflected forms

{
  "etymology_text": "From the Internet HTTP error code 404 (Not Found).",
  "forms": [
    {
      "form": "four oh fours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "four oh four"
      },
      "expansion": "four oh four (plural four oh fours)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              28,
              31
            ]
          ],
          "text": "Yup, clueless in Seattle, a 404 if I ever saw one.",
          "type": "example"
        }
      ],
      "glosses": [
        "a naive or clueless person."
      ],
      "id": "en-four_oh_four-en-noun-TiPmbG1c",
      "links": [
        [
          "naive",
          "naive"
        ],
        [
          "clueless",
          "clueless"
        ]
      ],
      "raw_glosses": [
        "(slang, US) a naive or clueless person."
      ],
      "tags": [
        "US",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-four oh four.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/10/En-au-four_oh_four.ogg/En-au-four_oh_four.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/1/10/En-au-four_oh_four.ogg"
    }
  ],
  "word": "four oh four"
}

{
  "etymology_text": "From the Internet HTTP error code 404 (Not Found).",
  "forms": [
    {
      "form": "four oh fours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "four oh four"
      },
      "expansion": "four oh four (plural four oh fours)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              28,
              31
            ]
          ],
          "text": "Yup, clueless in Seattle, a 404 if I ever saw one.",
          "type": "example"
        }
      ],
      "glosses": [
        "a naive or clueless person."
      ],
      "links": [
        [
          "naive",
          "naive"
        ],
        [
          "clueless",
          "clueless"
        ]
      ],
      "raw_glosses": [
        "(slang, US) a naive or clueless person."
      ],
      "tags": [
        "US",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-four oh four.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/10/En-au-four_oh_four.ogg/En-au-four_oh_four.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/1/10/En-au-four_oh_four.ogg"
    }
  ],
  "word": "four oh four"
}

Download raw JSONL data for four oh four meaning in English (1.2kB)

This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2026-01-16 from the enwiktionary dump dated 2026-01-01 using wiktextract (d1270d2 and 9905b1f). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.