"too big for one's britches" meaning in English

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  "etymology_text": "US origin, 19th c.",
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      "expansion": "too big for one's britches (not comparable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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        {
          "ref": "1989 May 22, Edwin M. Reingold, “Hard Times for Teflon Tom”, in Time:",
          "text": "A diffident, dedicated man, Bradley seemed the personification of rectitude. He never got too big for his britches.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Disturbingly confident, unacceptably cocky."
      ],
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      "raw_glosses": [
        "(idiomatic) Disturbingly confident, unacceptably cocky."
      ],
      "synonyms": [
        {
          "word": "too big for one's boots"
        }
      ],
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        "idiomatic",
        "not-comparable"
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      "glosses": [
        "Used other than figuratively or idiomatically: Too large to fit into one's pants."
      ],
      "id": "en-too_big_for_one's_britches-en-adj-9h1JkVcm",
      "links": [
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          "large",
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          "pants",
          "pants"
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      "synonyms": [
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          "_dis1": "7 93",
          "word": "too big for one's breeches"
        }
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  "word": "too big for one's britches"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
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      "examples": [
        {
          "ref": "1989 May 22, Edwin M. Reingold, “Hard Times for Teflon Tom”, in Time:",
          "text": "A diffident, dedicated man, Bradley seemed the personification of rectitude. He never got too big for his britches.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Disturbingly confident, unacceptably cocky."
      ],
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        [
          "confident",
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          "unacceptably",
          "unacceptably"
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          "cocky",
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        ]
      ],
      "raw_glosses": [
        "(idiomatic) Disturbingly confident, unacceptably cocky."
      ],
      "synonyms": [
        {
          "word": "too big for one's boots"
        }
      ],
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        "idiomatic",
        "not-comparable"
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      "glosses": [
        "Used other than figuratively or idiomatically: Too large to fit into one's pants."
      ],
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        [
          "large",
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        [
          "pants",
          "pants"
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  "synonyms": [
    {
      "word": "too big for one's breeches"
    }
  ],
  "word": "too big for one's britches"
}