The quality or state of being able to be certified or officially verified.
From 'certify' (via Latin 'certificare', meaning to make certain) plus '-able' (capable of) plus '-ity' (the state of being), creating a chain of suffixes that builds meaning.
English lets you stack suffixes like building blocks—'certify' becomes 'certifiable' becomes 'certifiability'—and each layer adds a new grammatical layer, though eventually these tower-words become wonderfully unwieldy.
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