"Fitz-" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*dʰeh₁(y)-"
      },
      "expansion": "[Template:root]",
      "name": "root"
    },
    {
      "args": {
        "1": "en",
        "2": "xno",
        "3": "fitz"
      },
      "expansion": "Anglo-Norman fitz",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "fro",
        "3": "fiz"
      },
      "expansion": "Old French fiz",
      "name": "der"
    },
    {
      "args": {
        "1": "fr",
        "2": "fils"
      },
      "expansion": "fils",
      "name": "m"
    },
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "fīlius",
        "4": "",
        "5": "son"
      },
      "expansion": "Latin fīlius (“son”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Anglo-Norman fitz, from Old French fiz (modern fils), from Latin fīlius (“son”).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix",
        "head": "",
        "sort": ""
      },
      "expansion": "Fitz-",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "Fitz-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English surnames",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "Fitzalan"
        },
        {
          "word": "Fitzclarence"
        },
        {
          "word": "Fitzgeorge"
        },
        {
          "word": "Fitzgerald"
        },
        {
          "word": "Fitzhenry"
        },
        {
          "word": "Fitzhugh"
        },
        {
          "word": "Fitzjames"
        },
        {
          "word": "Fitzjohn"
        },
        {
          "word": "Fitzmaurice"
        },
        {
          "word": "Fitzneal"
        },
        {
          "word": "Fitzpatrick"
        },
        {
          "word": "Fitzroy"
        },
        {
          "word": "Fitzwarren"
        },
        {
          "word": "Fitzwilliam"
        }
      ],
      "glosses": [
        "Son of; especially used for the illegitimate sons of royalty."
      ],
      "id": "en-Fitz--en-prefix-T5TwQeAW",
      "links": [
        [
          "surname",
          "surname"
        ],
        [
          "illegitimate",
          "illegitimate"
        ],
        [
          "royalty",
          "royalty"
        ]
      ],
      "raw_glosses": [
        "(used in A surnames) Son of; especially used for the illegitimate sons of royalty."
      ],
      "related": [
        {
          "word": "Mac"
        },
        {
          "word": "Mc-"
        },
        {
          "word": "O'"
        }
      ],
      "tags": [
        "morpheme",
        "used in A surnames"
      ],
      "wikipedia": [
        "Fitz"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɪts"
    }
  ],
  "word": "Fitz-"
}

{
  "derived": [
    {
      "word": "Fitzalan"
    },
    {
      "word": "Fitzclarence"
    },
    {
      "word": "Fitzgeorge"
    },
    {
      "word": "Fitzgerald"
    },
    {
      "word": "Fitzhenry"
    },
    {
      "word": "Fitzhugh"
    },
    {
      "word": "Fitzjames"
    },
    {
      "word": "Fitzjohn"
    },
    {
      "word": "Fitzmaurice"
    },
    {
      "word": "Fitzneal"
    },
    {
      "word": "Fitzpatrick"
    },
    {
      "word": "Fitzroy"
    },
    {
      "word": "Fitzwarren"
    },
    {
      "word": "Fitzwilliam"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*dʰeh₁(y)-"
      },
      "expansion": "[Template:root]",
      "name": "root"
    },
    {
      "args": {
        "1": "en",
        "2": "xno",
        "3": "fitz"
      },
      "expansion": "Anglo-Norman fitz",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "fro",
        "3": "fiz"
      },
      "expansion": "Old French fiz",
      "name": "der"
    },
    {
      "args": {
        "1": "fr",
        "2": "fils"
      },
      "expansion": "fils",
      "name": "m"
    },
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "fīlius",
        "4": "",
        "5": "son"
      },
      "expansion": "Latin fīlius (“son”)",
      "name": "der"
    }
  ],
  "etymology_text": "From Anglo-Norman fitz, from Old French fiz (modern fils), from Latin fīlius (“son”).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix",
        "head": "",
        "sort": ""
      },
      "expansion": "Fitz-",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "Fitz-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "related": [
    {
      "word": "Mac"
    },
    {
      "word": "Mc-"
    },
    {
      "word": "O'"
    }
  ],
  "senses": [
    {
      "categories": [
        "English lemmas",
        "English prefixes",
        "English surnames",
        "English terms derived from Anglo-Norman",
        "English terms derived from Latin",
        "English terms derived from Old French",
        "English terms derived from Proto-Indo-European",
        "English terms derived from the Proto-Indo-European root *dʰeh₁(y)-",
        "Rhymes:English/ɪts"
      ],
      "glosses": [
        "Son of; especially used for the illegitimate sons of royalty."
      ],
      "links": [
        [
          "surname",
          "surname"
        ],
        [
          "illegitimate",
          "illegitimate"
        ],
        [
          "royalty",
          "royalty"
        ]
      ],
      "raw_glosses": [
        "(used in A surnames) Son of; especially used for the illegitimate sons of royalty."
      ],
      "tags": [
        "morpheme",
        "used in A surnames"
      ],
      "wikipedia": [
        "Fitz"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɪts"
    }
  ],
  "word": "Fitz-"
}