unsound
Example Sentences
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If the proof is unverified by humans and the pure math is shaky, the applied math built on it can be not only unsound but dangerous.
From The Wall Street Journal ● Jun. 14, 2026
He has said the city government has "grave concerns" about any deployment of troops, labelling the president's approach as "uncoordinated, uncalled for, and unsound".
From BBC ● Aug. 24, 2025
That assessment was technically accurate but fundamentally unsound.
From Slate ● Mar. 28, 2025
The surface pleasures of “Y2K” are outlandishly fun, but plot-wise, the film is structurally unsound.
From Los Angeles Times ● Dec. 6, 2024
If the horse was unsound, he said, he would never let him out of his stall to work out.
From "Seabiscuit: An American Legend" by Laura Hillenbrand
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At once the unsoundest and the most attractive argument is to be found in the deliberate idealization of particular ages, the thirteenth century in England, for example, or the age of the Antonines.
From New Worlds For Old A Plain Account of Modern Socialism by H. G. (Herbert George) Wells