"Inconvertible" is a word in ENGLISH

inconvertible ENGLISH
Definition:

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.

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A friend in power is a friend lost.

Henry Adams

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Laugh your heart out.

Why did Julius Caesar buy crayons ?He wanted Mark Antony !

inconverted ENGLISH

Not turned or changed about.

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The quality or state of being inconvertible; not capable of being exchanged for, or converted into, something else; as, the …

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inconvertibly ENGLISH

In an inconvertible manner.

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