"perfidiously" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "perfidious",
        "3": "ly"
      },
      "expansion": "perfidious + -ly",
      "name": "suffix"
    }
  ],
  "etymology_text": "perfidious + -ly",
  "forms": [
    {
      "form": "more perfidiously",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most perfidiously",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "perfidiously (comparative more perfidiously, superlative most perfidiously)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ly",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "In a perfidious manner."
      ],
      "id": "en-perfidiously-en-adv-K-qIJX5V",
      "links": [
        [
          "perfidious",
          "perfidious"
        ]
      ],
      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "in a perfidious manner",
          "word": "heimtückisch"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "in a perfidious manner",
          "word": "treulos"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "in a perfidious manner",
          "word": "perfidnie"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "in a perfidious manner",
          "word": "haince"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "in a perfidious manner",
          "word": "kalleşçe"
        }
      ]
    }
  ],
  "word": "perfidiously"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "perfidious",
        "3": "ly"
      },
      "expansion": "perfidious + -ly",
      "name": "suffix"
    }
  ],
  "etymology_text": "perfidious + -ly",
  "forms": [
    {
      "form": "more perfidiously",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most perfidiously",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "perfidiously (comparative more perfidiously, superlative most perfidiously)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms suffixed with -ly"
      ],
      "glosses": [
        "In a perfidious manner."
      ],
      "links": [
        [
          "perfidious",
          "perfidious"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "de",
      "lang": "German",
      "sense": "in a perfidious manner",
      "word": "heimtückisch"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "in a perfidious manner",
      "word": "treulos"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "in a perfidious manner",
      "word": "perfidnie"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "in a perfidious manner",
      "word": "haince"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "in a perfidious manner",
      "word": "kalleşçe"
    }
  ],
  "word": "perfidiously"
}