"sell oneself short" meaning in English

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      "expansion": "sell oneself short",
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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
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      "examples": [
        {
          "text": "don't sell yourself short",
          "type": "example"
        },
        {
          "text": "Don't sell yourself short. You're better than most around here.",
          "type": "example"
        },
        {
          "text": "You're selling yourself short by not mentioning your years of experience.",
          "type": "example"
        }
      ],
      "glosses": [
        "To belittle oneself in judgment; to underestimate oneself and one's abilities (and thus avoid being acknowledged to the deserved extent)."
      ],
      "id": "en-sell_oneself_short-en-phrase-2eB0T0G1",
      "links": [
        [
          "belittle",
          "belittle"
        ],
        [
          "judgment",
          "judgment"
        ],
        [
          "avoid",
          "avoid"
        ],
        [
          "acknowledge",
          "acknowledge"
        ],
        [
          "extent",
          "extent"
        ]
      ],
      "related": [
        {
          "word": "stand in one's value"
        },
        {
          "word": "undersell"
        },
        {
          "tags": [
            "British"
          ],
          "word": "cry stinking fish"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "to belittle oneself",
          "word": "vähätellä itseään"
        },
        {
          "code": "el",
          "lang": "Greek",
          "roman": "aftodysfimízomai",
          "sense": "to belittle oneself",
          "word": "αυτοδυσφημίζομαι"
        }
      ]
    }
  ],
  "word": "sell oneself short"
}

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      "expansion": "sell oneself short",
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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "related": [
    {
      "word": "stand in one's value"
    },
    {
      "word": "undersell"
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          "text": "don't sell yourself short",
          "type": "example"
        },
        {
          "text": "Don't sell yourself short. You're better than most around here.",
          "type": "example"
        },
        {
          "text": "You're selling yourself short by not mentioning your years of experience.",
          "type": "example"
        }
      ],
      "glosses": [
        "To belittle oneself in judgment; to underestimate oneself and one's abilities (and thus avoid being acknowledged to the deserved extent)."
      ],
      "links": [
        [
          "belittle",
          "belittle"
        ],
        [
          "judgment",
          "judgment"
        ],
        [
          "avoid",
          "avoid"
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        [
          "acknowledge",
          "acknowledge"
        ],
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          "extent",
          "extent"
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  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "to belittle oneself",
      "word": "vähätellä itseään"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "aftodysfimízomai",
      "sense": "to belittle oneself",
      "word": "αυτοδυσφημίζομαι"
    }
  ],
  "word": "sell oneself short"
}