"otack" meaning in Swedish

{
  "etymology_templates": [
    {
      "args": {
        "1": "sv",
        "2": "o-",
        "3": "tack",
        "t1": "un-",
        "t2": "thanks"
      },
      "expansion": "o- (“un-”) + tack (“thanks”)",
      "name": "af"
    }
  ],
  "etymology_text": "o- (“un-”) + tack (“thanks”)",
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "noun"
      },
      "expansion": "otack",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish terms prefixed with o-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "ingratitude is the world's reward (people often don't receive the gratitude they deserve, proverb)",
          "text": "otack är världens lön",
          "type": "example"
        }
      ],
      "glosses": [
        "not being thanked for something (good) one has done, ingratitude"
      ],
      "id": "en-otack-sv-noun-R0QJQMYr",
      "links": [
        [
          "ingratitude",
          "ingratitude"
        ]
      ],
      "related": [
        {
          "english": "ungrateful",
          "word": "otacksam"
        }
      ],
      "synonyms": [
        {
          "word": "otacksamhet"
        }
      ]
    }
  ],
  "word": "otack"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "sv",
        "2": "o-",
        "3": "tack",
        "t1": "un-",
        "t2": "thanks"
      },
      "expansion": "o- (“un-”) + tack (“thanks”)",
      "name": "af"
    }
  ],
  "etymology_text": "o- (“un-”) + tack (“thanks”)",
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "noun"
      },
      "expansion": "otack",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "noun",
  "related": [
    {
      "english": "ungrateful",
      "word": "otacksam"
    }
  ],
  "senses": [
    {
      "categories": [
        "Swedish entries with incorrect language header",
        "Swedish lemmas",
        "Swedish nouns",
        "Swedish terms prefixed with o-",
        "Swedish terms with usage examples"
      ],
      "examples": [
        {
          "english": "ingratitude is the world's reward (people often don't receive the gratitude they deserve, proverb)",
          "text": "otack är världens lön",
          "type": "example"
        }
      ],
      "glosses": [
        "not being thanked for something (good) one has done, ingratitude"
      ],
      "links": [
        [
          "ingratitude",
          "ingratitude"
        ]
      ],
      "synonyms": [
        {
          "word": "otacksamhet"
        }
      ]
    }
  ],
  "word": "otack"
}