tireless

adjective tire·less \ ˈtī(-ə)r-ləs \
Updated on: 10 Nov 2017

Definition of tireless

:seemingly incapable of tiring :indefatigable
  • a tireless worker

tirelessly

adverb

tirelessness

noun

Examples of tireless in a Sentence

  1. She has been a tireless advocate for reform.

  2. a tireless advocate for human rights

Recent Examples of tireless from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tireless.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of tireless

1591


TIRELESS Defined for English Language Learners

tireless

adjective

Definition of tireless for English Language Learners

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


TIRELESS Defined for Kids

tireless

adjective tire·less \ ˈtīr-ləs \

Definition of tireless for Students

:able to work or persist a long time without becoming tired

tirelessly

adverb


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