The quality of being certifiable; the state of being able to be officially certified or proven genuine.
From 'certifiable' plus the suffix '-ness', an Old English suffix that converts adjectives into nouns representing abstract qualities.
English has two main ways to make abstract nouns from adjectives: '-ity' (from Latin) and '-ness' (from Anglo-Saxon)—'certifiability' vs. 'certifiableness'—and often both exist, though '-ity' sounds more formal and scholarly.
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