noun
the quality of being incapable of exchange or interchange
• Ant: ↑exchangeability
• Derivationally related forms: ↑unexchangeable
• Hypernyms: ↑changelessness, ↑unchangeability, ↑unchangeableness, ↑unchangingness
• Hyponyms: ↑incommutability, ↑irreplaceableness
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n.
Useful english dictionary. 2012.