Synonyms of inconvertible

Adjective

1. inconvertible (vs. convertible), unconvertible, unexchangeable, irredeemable

usage: used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value

2. inconvertible, untransmutable, incommutable (vs. commutable)

usage: not capable of being changed into something else; "the alchemists were unable to accept the inconvertible nature of elemental metals"

Definition and meaning of inconvertible (Dictionary)