modified
inexhaustible, unwearied, tireless; see active 2, tireless.
See indefatigable in Webster's New World Roget's A-Z Thesaurus II
Having or showing a capacity for protracted effort, regardless of difficulty or frustration:
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Also Mentioned In
» botany
» corvette
» diligent
» inexhaustible
» laborious
» lazy
» resolute
» scholarship
» tireless
» unwearied
Browse entries near indefatigable
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