tireless
/ˈtaɪələs/ (bre, ipa) · /ˈtaɪərləs/ (ame, ipa) · /ˈtī(-ə)r-ləs/ (ame, mw)
tireless — adjective
- tirelesspositive
- more tirelesscomparative
- most tirelesssuperlative
1. continuing to work with strong effort and energy for as long as needed, without
continuing to work with strong effort and energy for as long as needed, without becoming tired
Ryan's tireless efforts helped the team finish the project ahead of schedule.
collocation: tireless efforts
Tunde was tireless in his work to help homeless families find housing.
be tireless in + [activity]
The rescue team conducted a tireless search for the two missing children in the forest.
Adina made tireless attempts to improve the school's reading program for young students.
Throughout the crisis, Walid showed tireless dedication to the injured survivors.
- hardworking
more common and general; does not emphasise the continuous energy aspect
- untiring
similar meaning; slightly less frequent but interchangeable in most contexts
- indefatigable
very formal register; C2-level synonym with the same core meaning
- diligent
focuses on careful, thorough effort rather than sustained energy
用法筆記
Frequently used in formal or written contexts to praise someone's admirable dedication. Can appear before a noun (a tireless worker) or after a linking verb (she was tireless).