Dictionary

tireless

adjective tire·less \ˈtī(-ə)r-ləs\

: working very hard with a lot of energy for a long time : never seeming to get tired

Full Definition of TIRELESS

:  seemingly incapable of tiring :  indefatigable <a tireless worker>
tire·less·ly adverb
tire·less·ness noun
ADVERTISEMENT

Examples of TIRELESS

  1. She has been a tireless advocate for reform.
  2. <a tireless advocate for human rights>

First Known Use of TIRELESS

1591

Rhymes with TIRELESS

TIRELESS Defined for Kids

tireless

adjective tire·less \ˈtīr-ləs\

Definition of TIRELESS for Kids

:  able to work or persist a long time without becoming tired
tire·less·ly adverb

Browse

Next Word in the Dictionary: tiremanPrevious Word in the Dictionary: tire gageAll Words Near: tireless
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears