unexpendable

[ uhn-ik-spen-duh-buhl ]

adjective

1. essential; absolutely required:

   unexpendable resources vital to our security.

2. not capable of being expended; inexhaustible:

   an unexpendable source of energy.

3. not available for expenditure:

   The principal of the trust fund is unexpendable.

Word History and Origins

Origin of unexpendable¹

un- ¹ + expendable

Example Sentences

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

From Project Gutenberg