"upheaver" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "upheave",
        "3": "er"
      },
      "expansion": "upheave + -er",
      "name": "suffix"
    },
    {
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*keh₂p-"
      },
      "expansion": "",
      "name": "root"
    }
  ],
  "etymology_text": "upheave + -er",
  "forms": [
    {
      "form": "upheavers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "upheaver (plural upheavers)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "name": "English entries with language name categories using raw markup",
          "parents": [
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          "source": "w"
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        {
          "kind": "other",
          "name": "English terms suffixed with -er",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with consonant pseudo-digraphs",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "One who upheaves."
      ],
      "id": "en-upheaver-en-noun-0F1Pv6gh",
      "links": [
        [
          "upheave",
          "upheave"
        ]
      ],
      "related": [
        {
          "word": "upheaval"
        },
        {
          "word": "upheave"
        }
      ]
    }
  ],
  "word": "upheaver"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "upheave",
        "3": "er"
      },
      "expansion": "upheave + -er",
      "name": "suffix"
    },
    {
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*keh₂p-"
      },
      "expansion": "",
      "name": "root"
    }
  ],
  "etymology_text": "upheave + -er",
  "forms": [
    {
      "form": "upheavers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "upheaver (plural upheavers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "upheaval"
    },
    {
      "word": "upheave"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English nouns",
        "English terms derived from Proto-Indo-European",
        "English terms derived from the Proto-Indo-European root *keh₂p-",
        "English terms suffixed with -er",
        "English terms with consonant pseudo-digraphs"
      ],
      "glosses": [
        "One who upheaves."
      ],
      "links": [
        [
          "upheave",
          "upheave"
        ]
      ]
    }
  ],
  "word": "upheaver"
}