indefatigable (adj) - tireless or never tired of doing something [in-di-fat-i-guh-buhl]
BREAKDOWN: IN- (not) + DE- (down) + FATI- (break) + IG- (drive) + -ABLE (able to be)
fatigue describes a state of exhaustion or weariness from from excessive strain or exertion
fatigue means to weaken, exhaust, or cause to be tired
See also: ambiguous, mitigate, prodigal
“The indefatigable pursuit of an unattainable perfection, even though it consist in nothing more than in the pounding of an old piano, is what alone gives a meaning to our life on this unavailing star.” —Logan Pearsall Smith