This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Not redeemable for money in coin: inconvertible paper currency.

adj. Not able to be legally exchanged for another currency.

adj. Not convertible

adj. Not convertible; not capable of being transmuted, changed into, or exchanged for, something else

Not convertible; incapable of being converted into or exchanged for something else: as, one metal is inconvertible into another; inconvertible bonds (bonds that cannot be exchanged for others of a different tenor).

adj. not capable of being changed into something else

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

""If, therefore, the issue of inconvertible paper were subjected to strict rules, one rule being that whenever bullion rose above the Mint price gold parity, the issues should he contracted until the market price of bullion and the Mint price were again in accordance, such a currency would not be subject to any of the evils usually deemed inherent in an inconvertible paper.""

incommutable    irredeemable   

inexchangeable   

accessorio    one-world    ingenerable    undestroyed    istantaneo