tireless
Without need for rest
Tireless describes someone or something that continues without fatigue or flagging effort: a tireless advocate for reform, tireless dedication to the cause.
The word emphasizes sustained energy and persistence rather than literal inability to tire.
It often carries admiration for someone's commitment: She was tireless in her pursuit of justice.
Loyally and lovingly attached
- committedFirmly pledged or bound
- diligentPersistently attentive to tasks
- assiduousShowing careful persistent effort
- conscientiousScrupulously careful and thorough
meticulous · thorough · industrious · earnest · sincere · faithful · loyal · steadfast
Having great physical energy
animated · active · brisk · exuberant · vivacious · enthusiastic · sprightly · bustling
Continuing without pause
- doggedStubbornly persevering
- tenaciousStubbornly determined to continue
- unyieldingRefusing to give way
- unrelentingRefusing to let up
stubborn · obstinate · determined · resolute · insistent · unswerving · unshakeable · implacable
Capacity for sustained effort
- resilienceCapacity to recover quickly
- fortitudeEnduring courage under pain
- durabilityResistance to wear
- toughnessResilient durability under strain
hardiness · robustness · persistence · constancy · longevity · indefatigability · unwearied · marathon
devoted
Loyally and lovingly attached
- committedFirmly pledged or bound
- diligentPersistently attentive to tasks
- assiduousShowing careful persistent effort
conscientious · meticulous · thorough · industrious · earnest · sincere · faithful · loyal · steadfast · unwavering
vigorous
Having great physical energy
lively · animated · active · brisk · exuberant · vivacious · enthusiastic · sprightly · bustling · effervescent
relentless
Continuing without pause
- doggedStubbornly persevering
- tenaciousStubbornly determined to continue
- unyieldingRefusing to give way
unrelenting · stubborn · obstinate · determined · resolute · insistent · unswerving · unshakeable · implacable · inexorable
stamina
Capacity for sustained effort
- resilienceCapacity to recover quickly
- fortitudeEnduring courage under pain
- durabilityResistance to wear
toughness · hardiness · robustness · persistence · constancy · longevity · indefatigability · unwearied · marathon · long-suffering
- Hard Workgrind, hustle, toil, effort, labor
- tenacitydetermined, persistence, persistent, perseverance, determination
- work traitshardworking, diligent, productive, efficient, lazy
- nonstop24/7, always, around the clock, constant, continuous
- tough traitstough, resilient, fearless, brave, courageous
- energy levelsenergetic, energized, hyped, exhausted, fatigued