noninterchangeable
no·nin·terc·hangeable
adjective
1.
such that the terms of an expression cannot be interchanged without changing the meaning
- “the arguments of the symmetric relation,”
- “, are noninterchangeable”
Origin
From non- + interchangeable.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.