"duper" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dupe",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "dupe + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From dupe + -er.",
  "forms": [
    {
      "form": "dupers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "duper (plural dupers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -er (agent noun)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Bulgarian translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "a person who dupes another"
      ],
      "id": "en-duper-en-noun-2ZTvMoz4",
      "links": [
        [
          "dupe",
          "dupe"
        ]
      ],
      "related": [
        {
          "english": "etymologically unrelated",
          "translation": "etymologically unrelated",
          "word": "super-duper"
        }
      ],
      "translations": [
        {
          "code": "bg",
          "lang": "Bulgarian",
          "lang_code": "bg",
          "roman": "izmamnik",
          "sense": "person who dupes",
          "tags": [
            "masculine"
          ],
          "word": "измамник"
        },
        {
          "code": "bg",
          "lang": "Bulgarian",
          "lang_code": "bg",
          "roman": "mošenik",
          "sense": "person who dupes",
          "tags": [
            "masculine"
          ],
          "word": "мошеник"
        },
        {
          "code": "bg",
          "lang": "Bulgarian",
          "lang_code": "bg",
          "roman": "podlec",
          "sense": "person who dupes",
          "tags": [
            "masculine"
          ],
          "word": "подлец"
        },
        {
          "code": "bg",
          "lang": "Bulgarian",
          "lang_code": "bg",
          "roman": "šarlatan",
          "sense": "person who dupes",
          "tags": [
            "masculine"
          ],
          "word": "шарлатан"
        },
        {
          "code": "bg",
          "lang": "Bulgarian",
          "lang_code": "bg",
          "roman": "šarlatanin",
          "sense": "person who dupes",
          "tags": [
            "colloquial",
            "masculine"
          ],
          "word": "шарлатанин"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈduː.pə(ɹ)/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈdu.pɚ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "rhymes": "-uːpə(ɹ)"
    }
  ],
  "word": "duper"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "dupe",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "dupe + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From dupe + -er.",
  "forms": [
    {
      "form": "dupers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "duper (plural dupers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "english": "etymologically unrelated",
      "translation": "etymologically unrelated",
      "word": "super-duper"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -er (agent noun)",
        "Entries with translation boxes",
        "Pages with 2 entries",
        "Pages with entries",
        "Rhymes:English/uːpə(ɹ)",
        "Rhymes:English/uːpə(ɹ)/2 syllables",
        "Terms with Bulgarian translations"
      ],
      "glosses": [
        "a person who dupes another"
      ],
      "links": [
        [
          "dupe",
          "dupe"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈduː.pə(ɹ)/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈdu.pɚ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "rhymes": "-uːpə(ɹ)"
    }
  ],
  "translations": [
    {
      "code": "bg",
      "lang": "Bulgarian",
      "lang_code": "bg",
      "roman": "izmamnik",
      "sense": "person who dupes",
      "tags": [
        "masculine"
      ],
      "word": "измамник"
    },
    {
      "code": "bg",
      "lang": "Bulgarian",
      "lang_code": "bg",
      "roman": "mošenik",
      "sense": "person who dupes",
      "tags": [
        "masculine"
      ],
      "word": "мошеник"
    },
    {
      "code": "bg",
      "lang": "Bulgarian",
      "lang_code": "bg",
      "roman": "podlec",
      "sense": "person who dupes",
      "tags": [
        "masculine"
      ],
      "word": "подлец"
    },
    {
      "code": "bg",
      "lang": "Bulgarian",
      "lang_code": "bg",
      "roman": "šarlatan",
      "sense": "person who dupes",
      "tags": [
        "masculine"
      ],
      "word": "шарлатан"
    },
    {
      "code": "bg",
      "lang": "Bulgarian",
      "lang_code": "bg",
      "roman": "šarlatanin",
      "sense": "person who dupes",
      "tags": [
        "colloquial",
        "masculine"
      ],
      "word": "шарлатанин"
    }
  ],
  "word": "duper"
}