unexchangeable

adjectives

not suitable to be exchanged
unexchangeable
is derived from
unexchangeability
antonym
exchangeable
is similar to
not interchangeable or able to substitute one for another
"a rare incommutable skill"
incommutable
used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value
inconvertible, unconvertible, unexchangeable
is derived from
unexchangeability