Synonyms of tireless

tireless

adjective

ˈtī(-ə)r-ləs 

as in meticulous

showing no signs of weariness even after long hard effort

a tireless advocate for human rights

Synonyms & Similar Words

• meticulous
• indefatigable
• relentless
• unflagging
• conscientious
• untiring
• active
• vigorous
• diligent
• energetic
• inexhaustible
• intense
• steadfast
• persistent
• assiduous
• busy
• spirited
• painstaking
• unrelenting
• steady
• sedulous
• tenacious
• unremitting
• weariless
• determined
• stubborn
• dogged
• unfailing
• patient
• unflinching
• unfaltering
• hard
• industrious
• dynamic
• unabated
• pertinacious
• unwavering
• plodding
• feverish
• persevering
• strenuous
• laborious
• slavish

Antonyms & Near Antonyms

• lazy
• sluggish
• indolent
• listless
• shiftless
• lackadaisical
• slothful
• laggard
• desultory
• casual
• languid
• apathetic
• spiritless
• overworked
• beat
• broken
• drained
• spent
• overtaxed
• jaded
• wearied
• sapped
• done in
• enervated
• played out
• burned-out
• worn-out
• tuckered (out)

Example Sentences

Recent Examples of tireless

Instead, Alfonzo’s first appearance, the culmination of nine tireless years, was somber , stricken by the grief overshadowing what should’ve been a joyous moment in the Dodgers’ to the Padres. — Liana Handler follow, Los Angeles Times, 6 July 2026

Cristobal studies tape of every player UM signs, but Smith does a lot of the necessary legwork, because even Cristobal — with his tireless work ethic — can’t do everything. — Barry Jackson, Miami Herald, 3 July 2026

For human crews, this transformation removes them from hazardous sparks and toxic fumes, shifting their roles from manual laborers to supervisors of a faster, tireless robotic workforce. — Mrigakshi Dixit, Interesting Engineering, 15 June 2026

From playing for his teammates and father, to a tireless work ethic, the 5-foot-5 Kim delivers powerful drives to complement his short game. — Dan Albano, Oc Register, 12 June 2026