interchangeable

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

adjective (mathematics, logic) such that the arguments or roles can be interchanged
adjective capable of replacing or changing places with something else; permitting mutual substitution without loss of function or suitability

From interchange + -able.

We work on the interchangeable point system. — In Our Town, William Allen White
"But I have heard you say that matter and energy were interchangeable." — Astounding Stories, May, 1931, Various
The c and the k are about interchangeable, and you can use either one of them. — Across India; Or, Live Boys in the Far East, Oliver Optic

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