(US, simile) Very stupid; dumb as a post.
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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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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