9
unwearied(adjective, continue, tired, tireless)
7
indefatigable(adjective, continue, tired, tireless)
7
inexhaustible(adjective, continue, tired, tireless)
7
tireless(adjective, continue, tired)
7
unflagging(adjective, continue, tired, tireless)
7
untiring(adjective, continue, tired, tireless)
6
unfailing(adjective, continue, tired, tireless)
5
industrious(adjective, tireless)
5
persevering(verb, adjective, tireless)
5
resolute(adjective, tireless)
4
active(adjective, tireless)
4
energetic(adjective, tireless)
4
steadfast(adjective, tireless)
3
assiduous
3
diligent
3
eager(adjective, tireless)
3
enthusiastic(adjective, tireless)
3
perky(adjective, tireless)
3
persistent
3
sedulous
11 years ago|3.8k views|share |citing 
APASmart Define. (2015). weariless thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/weariless/thesaurus/synonyms
ChicagoSmart Define. 2015. "weariless thesaurus" https://smartdefine.org/weariless/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, weariless thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/weariless/thesaurus/synonyms>.
MLASmart Define. "weariless thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/weariless/thesaurus/synonyms>