used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value
<adj.all>
not capable of being changed into something else
<adj.all> the alchemists were unable to accept the inconvertible nature of elemental metals
Inconvertible \In`con*vert"i*ble\, a. [L. inconvertibilis: cf. F. inconvertible. See {In-} not, and {Convertible}.] Not convertible; not capable of being transmuted, changed into, or exchanged for, something else; as, one metal is inconvertible into another; bank notes are sometimes inconvertible into specie. --Walsh.
Japanese businessmen have a range of reasons for holding back. High inflation rates, a heavy debt burden and inconvertible currencies make it difficult to profit in Eastern Europe, in their view.
However, Mr. Pavlov stood by his claim that foreign banks were involved in illegal currency exchanges of huge sums of rubles, an inconvertible currency that is increasingly worthless in the Soviet economy.