adj

tireless

adj

Never seeming to tire; working with constant energy and determination.

"She was a tireless campaigner for local charities."

"His tireless effort finally paid off at the finish line."

How to Use Tireless

Learner’s notes

In plain EnglishFull of stamina; never running out of energy or dedication.

Common pairings

tireless effort tireless worker tireless campaigner

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She was a _____ campaigner for local charities.

From tire ("to grow weary") plus -less.

inexhaustible indefatigable unflagging unweariable unwearying

exhaustible defatigable weariable wearying

inexhaustible

useless ageless wireless hopeless homeless careless lifeless baseless clueless timeless loveless nameless

inexhaustible indefatigable unflagging unweariable unwearying exhaustible defatigable weariable wearying