indefatigableadjective
uk/ˌɪn.dɪˈfæt.ɪ.ɡə.bəl/us/ˌɪn.dɪˈfæt̬.ɪ.ɡə.bəl/formalalways determined and energetic in trying to achieve something and never willing to admit defeat:
Annie was an indefatigable campaigner for better community services.
Thesaurus: synonyms and related words
Energetic and lively
- a spring in your step idiom
- alive
- barnstorming
- be alive and well/kicking idiom
- be as fresh as a daisy idiom
- bounce
- frisky
- frolicsome
- fury
- go-getter
- high-spirited
- irrepressible
- lively
- playful
- refreshing
- spry
- supercharged
- tear into sth
- throw yourself into sth
- tireless
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indefatigably
adverb uk/ˌɪn.dɪˈfæt.ɪ.ɡə.bli/us/ˌɪn.dɪˈfæt̬.ɪ.ɡə.bli/