Definition of irrefragable
1 : impossible to refute <irrefragable arguments>
2 : impossible to break or alter <irrefragable rules>
Examples of irrefragable
<the prosecutor painstakingly built an irrefragable case>
Origin of irrefragable
Late Latin irrefragabilis, from Latin in- + refragari to oppose, from re- + -fragari (as in suffragari to vote for); akin to Latin suffragium suffrage
First Known Use: 1533
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