- The definition of tireless is energized and enthusiastic, showing great energy or not easily fatigued.
If you are dedicated to helping the homeless and you spend countless hours continually fighting for their rights, this is an example of being a tireless advocate for the homeless.
tireless definition by Webster's New World
- that does not become tired; untiring or unwavering
- characteristic of a tireless person; continuing, persistent, etc.: one's tireless efforts
tireless definition by American Heritage Dictionary
- tireˈless·ly adverb
- tireˈless·ness noun