Search Dictionary
Definition of inexhaustible
inexhaustible
/ˌɪnɪɡˈzɔːstəbəl/
in · ex · haust · i · ble
Adverb:inexhaustibly
inexhaustible Lexical Profile
CEFR
C1
Grade
9
Tier
2
Usage
Top 10k
Syllables
5
inexhaustible Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Unable to be used up, depleted, or consumed completely because existing in vast or boundless abundance.
Example
"Solar radiation provides the planet with a virtually inexhaustible source of clean energy."
2
Incapable of becoming tired or worn out; showing untiring energy, patience, or enthusiasm.
Example
"The archive was cataloged by an inexhaustible researcher who spent decades studying the manuscripts."
Synonyms
View all synonyms for inexhaustible Antonyms
View all antonyms for inexhaustible• Rhymes for inexhaustible
• Nearby Words
Word Origin & Etymology
Borrowed in the late 16th century from Late Latin inexhaustibilis, from Latin inexhaustus ('unexhausted'), formed from the privative prefix in- ('not') and exhaustus, past participle of exhaurire ('to draw out, drain, or empty').
Cite this Entry
Wordmom. (2026). Definition of Inexhaustible. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/inexhaustible