"dumb as a rock" meaning in All languages combined

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          "ref": "2023 March 15, Brian X. Chen, Nico Grant, Karen Weise, quoting Satya Nadella, “How Siri, Alexa and Google Assistant Lost the A.I. Race”, in The New York Times, →ISSN:",
          "text": "Voice assistants are “dumb as a rock,” Satya Nadella, Microsoft’s chief executive, said in an interview this month with The Financial Times, declaring that newer A.I. would lead the way.",
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      "glosses": [
        "Very stupid; dumb as a post."
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        "(US, simile) Very stupid; dumb as a post."
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        {
          "word": "dumb as a box of rocks"
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          "word": "dumber than a rock"
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        "Very stupid; dumb as a post."
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        "(US, simile) Very stupid; dumb as a post."
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  "title": "dumb as a rock",
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