"сумнівайсь" meaning in Ukrainian

{
  "forms": [
    {
      "form": "сумніва́йсь",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sumnivájsʹ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "uk",
        "2": "verb form",
        "head": "сумніва́йсь"
      },
      "expansion": "сумніва́йсь • (sumnivájsʹ)",
      "name": "head"
    }
  ],
  "lang": "Ukrainian",
  "lang_code": "uk",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ukrainian entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "sumnivátysja",
          "word": "сумніва́тися impf"
        }
      ],
      "glosses": [
        "second-person singular imperative of сумніва́тися impf (sumnivátysja)"
      ],
      "id": "en-сумнівайсь-uk-verb-SIdbvmwr",
      "links": [
        [
          "сумніва́тися",
          "сумніватися#Ukrainian"
        ]
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "сумніва́йся"
        }
      ],
      "tags": [
        "form-of",
        "imperative",
        "second-person",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sʊmnʲiˈʋai̯sʲ]"
    }
  ],
  "word": "сумнівайсь"
}

{
  "forms": [
    {
      "form": "сумніва́йсь",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "sumnivájsʹ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "uk",
        "2": "verb form",
        "head": "сумніва́йсь"
      },
      "expansion": "сумніва́йсь • (sumnivájsʹ)",
      "name": "head"
    }
  ],
  "lang": "Ukrainian",
  "lang_code": "uk",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Ukrainian entries with incorrect language header",
        "Ukrainian non-lemma forms",
        "Ukrainian terms with IPA pronunciation",
        "Ukrainian verb forms"
      ],
      "form_of": [
        {
          "extra": "sumnivátysja",
          "word": "сумніва́тися impf"
        }
      ],
      "glosses": [
        "second-person singular imperative of сумніва́тися impf (sumnivátysja)"
      ],
      "links": [
        [
          "сумніва́тися",
          "сумніватися#Ukrainian"
        ]
      ],
      "related": [
        {
          "tags": [
            "alternative"
          ],
          "word": "сумніва́йся"
        }
      ],
      "tags": [
        "form-of",
        "imperative",
        "second-person",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sʊmnʲiˈʋai̯sʲ]"
    }
  ],
  "word": "сумнівайсь"
}