The etymology of “indefatigability” is as follows:
- “In-” is a Latin prefix meaning “not.”
- “Defatigare” is derived from the Latin verb “de-” (down, away) + “fatigare” (to tire).
- The suffix “-ability” comes from Latin “-abilitas,” indicating a condition or quality.
“Indefatigability” thus means ‘the quality of not being able to be worn down or tired.’