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unexpendable

[ uhn-ik-spen-duh-buhl ]
/ ˌʌn ɪkˈspɛn də bəl /
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adjective

essential; absolutely required: unexpendable resources vital to our security.
not capable of being expended; inexhaustible: an unexpendable source of energy.
not available for expenditure: The principal of the trust fund is unexpendable.

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Origin of unexpendable

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use unexpendable in a sentence

  • Their wickedness grows out of their wonderful stores of unexpended and unexpendable energy.

    The Idiot at Home|John Kendrick Bangs
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