- 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. 2018
Examples from the Web for unexpendable
Their wickedness grows out of their wonderful stores of unexpended and unexpendable energy.The Idiot at Home
John Kendrick Bangs