"обоснован" meaning in Bulgarian

{
  "forms": [
    {
      "form": "обоснова́н",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "obosnován",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "обоснова́н",
        "2": "pass"
      },
      "expansion": "обоснова́н • (obosnován)",
      "name": "bg-part"
    }
  ],
  "lang": "Bulgarian",
  "lang_code": "bg",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Bulgarian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "obosnová",
          "word": "обоснова́"
        }
      ],
      "glosses": [
        "indefinite masculine singular past passive participle of обоснова́ (obosnová)"
      ],
      "id": "en-обоснован-bg-verb-au0JpxS-",
      "links": [
        [
          "обоснова́",
          "обоснова#Bulgarian"
        ]
      ],
      "tags": [
        "form-of",
        "indefinite",
        "masculine",
        "participle",
        "passive",
        "past",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[obosnoˈvan]"
    }
  ],
  "word": "обоснован"
}

{
  "forms": [
    {
      "form": "обоснова́н",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "obosnován",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "обоснова́н",
        "2": "pass"
      },
      "expansion": "обоснова́н • (obosnován)",
      "name": "bg-part"
    }
  ],
  "lang": "Bulgarian",
  "lang_code": "bg",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Bulgarian entries with incorrect language header",
        "Bulgarian non-lemma forms",
        "Bulgarian participles",
        "Bulgarian past passive participles",
        "Bulgarian terms with IPA pronunciation",
        "Bulgarian verb forms",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "extra": "obosnová",
          "word": "обоснова́"
        }
      ],
      "glosses": [
        "indefinite masculine singular past passive participle of обоснова́ (obosnová)"
      ],
      "links": [
        [
          "обоснова́",
          "обоснова#Bulgarian"
        ]
      ],
      "tags": [
        "form-of",
        "indefinite",
        "masculine",
        "participle",
        "passive",
        "past",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[obosnoˈvan]"
    }
  ],
  "word": "обоснован"
}