“+ adjective
Etymology: in- (I) + exhaust + -ible
: not exhaustible: as
a. : incapable of being used up : unfailing
inexhaustible supplies of coal
an inexhaustible spring
b. : incapable of being wearied or worn out
inexhaustible fertility of invention
inexhaustible patience
• in·ex·haust·ible·ness -nə̇s noun -es
• in·ex·haust·ibly -blē, -bli adverb