unexchangeable
1. [ adjective ] not suitable to be exchanged
Related terms: exchangeable incommutable
2. [ adjective ] used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value
Synonyms: unconvertible inconvertible
Related terms: convertible irredeemable convertibility
Similar spelling:   unchangeable
  unchangeableness
  unchangeably
  unexchangeability
  unchangeability
  unmechanical
  unchangingness
  unmechanized
  unmechanised