indefatigable
adjective
in·de·fat·i·ga·ble
ˌin-di-ˈfa-ti-gə-bəl 
: incapable of being fatigued : untiring
an indefatigable worker
Examples of indefatigable in a Sentence
a person of indefatigable patience
an indefatigable laborer who can work from sunrise to sunset
Recent Examples on the Web
This year, the indefatigable founder and principal designer of his eponymous brand marks 40 years in the business at a time when his reimagined vision for preppy is resonating with both his loyal fans and a new crop of Gen Z consumers.
—
Katie Abel, Footwear News, 23 Oct. 2025
Their rugged endurance is what endears Jeeps to car-lovers with a sense of history and who appreciate the significance of a vehicle that defined an indefatigable generation.
—Robert Ross, Robb Report, 17 Oct. 2025
Indeed, inspired by the indefatigable Rice, who was making last-ditch blocks at one end after chasing half the length of the pitch and setting up goals at the other, there was a resilience and relentlessness about Arsenal against Newcastle that spoke volumes for their mentality.
—Stuart James, New York Times, 29 Sep. 2025
Sheeran, an indefatigable road warrior, finished his worldwide Mathematics Tour earlier this year after spanning the globe since 2022.
—Melissa Ruggieri, USA Today, 18 Sep. 2025
See All Example Sentences for indefatigable
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Katie Abel, Footwear News, 23 Oct. 2025
Their rugged endurance is what endears Jeeps to car-lovers with a sense of history and who appreciate the significance of a vehicle that defined an indefatigable generation.
—Robert Ross, Robb Report, 17 Oct. 2025
Indeed, inspired by the indefatigable Rice, who was making last-ditch blocks at one end after chasing half the length of the pitch and setting up goals at the other, there was a resilience and relentlessness about Arsenal against Newcastle that spoke volumes for their mentality.
—Stuart James, New York Times, 29 Sep. 2025
Sheeran, an indefatigable road warrior, finished his worldwide Mathematics Tour earlier this year after spanning the globe since 2022.
—Melissa Ruggieri, USA Today, 18 Sep. 2025
See All Example Sentences for indefatigable
Cite this Entry
“Indefatigable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indefatigable. Accessed 31 Oct. 2025.
Copy CitationKids Definition
indefatigable
adjective
in·de·fat·i·ga·ble
ˌin-di-ˈfat-i-gə-bəl
: capable of working a long time without tiring : tireless
an indefatigable teacher
Love words? Need even more definitions?
Merriam-Webster unabridged
Share