Etymology
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irrefutable (adj.)
"incapable of being disproved," 1610s, from Late Latin irrefutabilis "irrefutable," from assimilated form of in- "not, opposite of" (see in- (1)) + refutabilis "refutable," from refutare (see refute). Related: Irrefutably; irrefutability.
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uncontrollable (adj.)
1570s, "irrefutable," from un- (1) "not" + controllable. From 1590s as "not subject to authority;" meaning "that cannot be restrained" is from 1640s. Related: Uncontrollably.
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