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Use "indefinability" in a sentence
"According to Mr. Gordon, the Kitchen's 1981 music menu was defined by its indefinability."
"In my opinion, the indefinability of particulars makes it impossible for substantial forms to be particulars."
"As a matter of fact the lemma has become the standard tool for producing self-referential statements and for transforming the semantical paradoxes into indefinability and (formal) undecidability results."