Able to be denied or disputed; something that can be reasonably claimed to be untrue or non-existent.
From 'deny' (from Latin 'denegare') plus the suffix '-able' (capable of being), formed in English since the 16th century.
The phrase 'plausible deniability' is beloved by politicians and spies—it describes actions deniable enough that leaders can claim they didn't know about them, creating a protective fog of uncertainty.
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