Definition Of tireless
having or showing great effort or energy.
a tireless campaigner
Example Of tireless
A record-breaking sprinter in his youth - his collegiate mark in the 60-yard dash stood for decades - he has revealed, in his first term, the tirelessness , stamina and patience of a long-distance runner.
A York man has finally found his long-lost father after a tireless search that took him to the other side of the Atlantic.
But he more than compensated for any physical deficits by his willingness to court female readers, and by his tirelessness in discussing his own work.
Frank was also a tireless campaigner for improved housing for working class people.
He devoted his life to fighting apartheid in South Africa, and was a tireless campaigner.