"tf" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Pronoms interrogatifs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "pron",
  "pos_title": "Pronom interrogatif",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Abréviations en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Argot Internet en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Langage SMS en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Abréviation de the fuck ; sert à exprimer la contrariété ou la surprise."
      ],
      "id": "fr-tf-en-pron-R3tJIJYv",
      "raw_tags": [
        "Abréviation"
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "Internet",
        "SMS"
      ]
    }
  ],
  "tags": [
    "interrogative",
    "invariable"
  ],
  "word": "tf"
}

{
  "categories": [
    "Lemmes en anglais",
    "Pronoms interrogatifs en anglais",
    "anglais"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "pron",
  "pos_title": "Pronom interrogatif",
  "senses": [
    {
      "categories": [
        "Abréviations en anglais",
        "Argot Internet en anglais",
        "Langage SMS en anglais",
        "Wiktionnaire:Exemples manquants en anglais"
      ],
      "glosses": [
        "Abréviation de the fuck ; sert à exprimer la contrariété ou la surprise."
      ],
      "raw_tags": [
        "Abréviation"
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "Internet",
        "SMS"
      ]
    }
  ],
  "tags": [
    "interrogative",
    "invariable"
  ],
  "word": "tf"
}