unquenchable
/ʌnˈkwɛntʃəbəl/
adjective
- Impossible to satisfy or stop; extremely strong and lasting.
- She had an unquenchable thirst for knowledge, reading every book she could find.
- The wildfire burned with an unquenchable intensity, spreading for miles.
- His unquenchable optimism kept the team motivated even after many failures.
Antonyms