"four-letter" meaning in All languages combined

{
  "etymology_text": "Figurative use modelled on four-letter word.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "four-letter",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "Used other than figuratively or idiomatically: see four-letter: containing four letters."
      ],
      "id": "en-four-letter-en-adj-AdWxL6Rm",
      "links": [
        [
          "four-letter",
          "four-letter#English"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "a four-letter reply, a four-letter insult, a four-letter tirade"
        }
      ],
      "glosses": [
        "Consisting of or characterised by swear words and profanity."
      ],
      "id": "en-four-letter-en-adj-41fSSNgj",
      "links": [
        [
          "swear word",
          "swear word"
        ],
        [
          "profanity",
          "profanity"
        ]
      ]
    }
  ],
  "word": "four-letter"
}

{
  "categories": [
    "English adjectives",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_text": "Figurative use modelled on four-letter word.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "four-letter",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "Used other than figuratively or idiomatically: see four-letter: containing four letters."
      ],
      "links": [
        [
          "four-letter",
          "four-letter#English"
        ]
      ]
    },
    {
      "examples": [
        {
          "text": "a four-letter reply, a four-letter insult, a four-letter tirade"
        }
      ],
      "glosses": [
        "Consisting of or characterised by swear words and profanity."
      ],
      "links": [
        [
          "swear word",
          "swear word"
        ],
        [
          "profanity",
          "profanity"
        ]
      ]
    }
  ],
  "word": "four-letter"
}