indefatigable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But an indefatigable Volkanovski's agility and relentless striking eventually wore down his flagging challenger, who was unable to land a knockout in the final round.

From Barron's • Feb. 1, 2026

Xenarios, who died of cancer on Sept. 6 at home in New York at age 79, was the indefatigable soul of the organization, leading it for 40 years until her retirement in 2017.

From The Wall Street Journal • Oct. 10, 2025

They deserve our support, as do a slew of writers, such as the indefatigable Heather Cox Richardson and Ruth Ben-Ghiat, who publish via Substack.

From Salon • Jul. 5, 2025

The tricky conditions met neither woman was able to play their best tennis, but Gauff showed indefatigable spirit and will to win.

From BBC • Jun. 7, 2025

Over the next eighteen months, this indefatigable machine would produce two thousandths of a gram of plutonium, a quantity about the size of a grain of salt.

From "Big Science" by Michael Hiltzik