tireless
UK: ˈtaɪələs | US: ˈtaɪərləs
adj. showing great effort or energy without becoming tired
adj. continuing without pause or fatigue
The word "tireless" combines "tire," derived from Old English teorian (to weary or exhaust), with the suffix "-less," meaning "without." The suffix "-less" originates from Old English -lēas, indicating absence. Together, they form a vivid adjective describing someone or something that does not succumb to exhaustion. The logical progression reflects a straightforward negation of fatigue, emphasizing endurance.
She was a tireless advocate for human rights.
His tireless efforts led to the project's success.
The volunteers worked tirelessly to help the community.
The athlete's tireless training paid off in the competition.
Despite her age, she remained tireless in her pursuit of knowledge.