Meaning & use
Irrefragable
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Impossible to refute or dispute; incontestable.
See it in a sentence
The lawyer presented irrefragable evidence that left the jury with no doubt.
His argument was built on irrefragable logic, leaving critics with nothing to attack.
A note on using this word
A rare and formal word derived from Latin 'refragari' (to oppose); it's stronger than 'undeniable' and mostly appears in legal or philosophical writing.
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