"counteragent" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "counter",
        "3": "agent"
      },
      "expansion": "counter- + agent",
      "name": "prefix"
    }
  ],
  "etymology_text": "From counter- + agent.",
  "forms": [
    {
      "form": "counteragents",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "counteragent (plural counteragents)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "47 53",
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          "name": "Terms with Russian translations",
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      ],
      "glosses": [
        "An agent having the opposite effect; an antidote."
      ],
      "id": "en-counteragent-en-noun-M0-RC~fa",
      "links": [
        [
          "agent",
          "agent"
        ],
        [
          "effect",
          "effect"
        ],
        [
          "antidote",
          "antidote"
        ]
      ],
      "translations": [
        {
          "_dis1": "99 1",
          "code": "ru",
          "lang": "Russian",
          "roman": "kontragént",
          "sense": "an agent having the opposite effect; an antidote",
          "tags": [
            "masculine"
          ],
          "word": "контраге́нт"
        }
      ]
    },
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          "source": "w+disamb"
        },
        {
          "_dis": "44 56",
          "kind": "other",
          "name": "English terms prefixed with counter-",
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        {
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      ],
      "glosses": [
        "A spy working for the opposing side."
      ],
      "id": "en-counteragent-en-noun-m8YweRft",
      "links": [
        [
          "spy",
          "spy"
        ]
      ]
    }
  ],
  "word": "counteragent"
}

{
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    "Pages with entries",
    "Terms with Russian translations"
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  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "counter",
        "3": "agent"
      },
      "expansion": "counter- + agent",
      "name": "prefix"
    }
  ],
  "etymology_text": "From counter- + agent.",
  "forms": [
    {
      "form": "counteragents",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "counteragent (plural counteragents)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "An agent having the opposite effect; an antidote."
      ],
      "links": [
        [
          "agent",
          "agent"
        ],
        [
          "effect",
          "effect"
        ],
        [
          "antidote",
          "antidote"
        ]
      ]
    },
    {
      "glosses": [
        "A spy working for the opposing side."
      ],
      "links": [
        [
          "spy",
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        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "kontragént",
      "sense": "an agent having the opposite effect; an antidote",
      "tags": [
        "masculine"
      ],
      "word": "контраге́нт"
    }
  ],
  "word": "counteragent"
}