"off one's tree" meaning in English

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  "lang_code": "en",
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          "ref": "1989, Robert McLiam Wilson, Ripley Bogle, Arcade Publishing, published 1998, →ISBN, page 192:",
          "text": "Deirdre was increasingly off her tree in the last sad days of our relationship. Her demands and quirks were ever more extravagant and dislocated.",
          "type": "quote"
        },
        {
          "ref": "1994, Tom Wells, The War Within: America's Battle Over Vietnam, iUniverse, published 2005, →ISBN, page 391:",
          "text": "\"These guys were off their tree,\" David Hawk recalled. At one point, a VMC activist asked the Weathermen what they were really after. \"To kill all rich people,\" Ayers replied.",
          "type": "quote"
        },
        {
          "ref": "2010, Anouchka Grose, Why Do Fools Fall in Love: A Realist's Guide to Romance, Tin House Books, published 2011, →ISBN, page 92:",
          "text": "But after her wedding he goes completely off his tree, runs off into the wilderness and starts ranting in verse and writing poems in the sand with a stick.",
          "type": "quote"
        }
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      "glosses": [
        "Crazy; unhinged; irrational."
      ],
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          "Crazy",
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          "unhinged",
          "unhinged"
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          "irrational",
          "irrational"
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      ],
      "raw_glosses": [
        "(idiomatic) Crazy; unhinged; irrational."
      ],
      "synonyms": [
        {
          "word": "out of one's tree"
        }
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  "word": "off one's tree"
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        {
          "ref": "1989, Robert McLiam Wilson, Ripley Bogle, Arcade Publishing, published 1998, →ISBN, page 192:",
          "text": "Deirdre was increasingly off her tree in the last sad days of our relationship. Her demands and quirks were ever more extravagant and dislocated.",
          "type": "quote"
        },
        {
          "ref": "1994, Tom Wells, The War Within: America's Battle Over Vietnam, iUniverse, published 2005, →ISBN, page 391:",
          "text": "\"These guys were off their tree,\" David Hawk recalled. At one point, a VMC activist asked the Weathermen what they were really after. \"To kill all rich people,\" Ayers replied.",
          "type": "quote"
        },
        {
          "ref": "2010, Anouchka Grose, Why Do Fools Fall in Love: A Realist's Guide to Romance, Tin House Books, published 2011, →ISBN, page 92:",
          "text": "But after her wedding he goes completely off his tree, runs off into the wilderness and starts ranting in verse and writing poems in the sand with a stick.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Crazy; unhinged; irrational."
      ],
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        "(idiomatic) Crazy; unhinged; irrational."
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  "synonyms": [
    {
      "word": "out of one's tree"
    }
  ],
  "word": "off one's tree"
}