INDEFATIGABLY Synonyms: 13 Similar and Opposite Words

indefatigably

adverb

as in tirelessly

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Recent Examples of indefatigably Selling cigarettes on the street to buy food for her siblings, the pre-teen is indefatigably upbeat, eagerly anticipating an imminent passage to Germany. — Guy Lodge, Variety, 24 Jan. 2026 Matthew Restall, for example, has worked indefatigably as a myth buster for dozens of misconceptions for roughly two decades now, and only recently did another historian, Camilla Townsend, stitch together the history of the Aztecs according to their own statements, as recorded in Nahuatl. — Literary Hub, 18 Aug. 2025

Recent Examples of Synonyms for indefatigably

Adverb

Pete Shilaimon and the cast and crew of the film, worked tirelessly on research.

— Baz Bamigboye, Deadline, 5 Oct. 2026
There are some authors who plumb the roots of their own concerns or anxieties, while others work tirelessly to build worlds out of words and ideas.

— Josh Zajdman, Vogue, 29 Sep. 2026

Definition of tirelessly

Adverb

An alderman should advocate vigorously for the ward while recognizing that decisions about taxes, development, transportation, public safety and city finances affect millions of residents.

— Vince Fattore, Chicago Tribune, 24 Sep. 2026
Shake the jar vigorously in a circular motion to utilize centrifugal force to pull as much water as possible away from the seeds.

— Kim Toscano, Southern Living, 14 Sep. 2026

Definition of vigorously

Adverb

The government once dedicated itself energetically to distributing homesteads or homes.

— Daniel Immerwahr, New Yorker, 28 Sep. 2026
One remaining challenge is to make a DNA computer that is energetically favorable, stable, reliable, and doesn’t require intervening tweaks and top-ups to arrive at a result.

— Mike McRae September 22, New Atlas, 23 Sep. 2026

Definition of energetically

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indefatigable

indefatigably

indefeasible

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“Indefatigably.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/indefatigably. Accessed 7 Oct. 2026.

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Synonyms of indefatigably

adverb

Example Sentences

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