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.
Origin of unexpendable
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for unexpendable
Historical Examples of unexpendable
Their wickedness grows out of their wonderful stores of unexpended and unexpendable energy.The Idiot at Home
John Kendrick Bangs