- indefatigable⇄adv. indefatigably.
- indefatigable⇄indefatigable, adjective.
never getting tired or giving up; tireless.
Ex. An indefatigable worker keeps on working until his work is done. His diligence was indefatigable (Edward Gibbon).
(SYN) untiring, persistent, unflagging. - indefatigable⇄noun indefatigableness.