indefatigable
1 ENTRIES FOUND:
Britannica Dictionary definition of INDEFATIGABLE
[more indefatigable; most indefatigable]
formal
:
able to work or continue for a very long time without becoming tired
:
tireless
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an indefatigable campaigner
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a person of indefatigable patience/enthusiasm/optimism
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She works indefatigably on behalf of her clients.
