English example sentences with "impugn"

The father does not impugn her ability to be a good mother.
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A language that can pluralize the word “truth” does not thereby impugn the uniqueness of the concept as a whole; “truths” may just refer to several statements, each of which is true, as in “the fundamental truths of science.”
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I wouldn't impugn your integrity simply because we have different value systems.
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