Fatigable vs. Indefatigable
Fatigableadjective
Susceptible to fatigue; able to become physically exhausted.
Fatigableadjective
Easily tired.
Indefatigableadjective
Extremely persistent and untiring.
Indefatigableadjective
Incapable of being fatigued; not readily exhausted; unremitting in labor or effort; untiring; unwearying; not yielding to fatigue; as, indefatigable exertions, perseverance, application.
Indefatigableadjective
showing sustained enthusiastic action with unflagging vitality;
