1
decided
1
demoniac(adjective, strong, moving, lively, active)
1
durable
1
eager
1
eager beaver(adjective, determined, persevering)
1
easy-going(adjective, calm, quiet, understanding, gentle)
1
endless
1
enterprising(adjective, strong, moving, energetic, lively)
1
even-tempered(adjective, calm, quiet, understanding, gentle)
1
fibrous
1
fireball(adjective, determined, persevering)
1
fixed
1
forbearing(adjective, calm, quiet, understanding, gentle)
1
forcible(adjective, strong, moving, lively, active)
1
forgiving(adjective, calm, quiet, understanding, gentle)
1
full of beans(expression, adjective, idiom, active, peppy)
1
full of pep(expression, adjective, idiom, strong, speedy)
1
go-go(adjective, determined, persevering)
1
goal-oriented
1
gristly
11 years ago|6.1k views|share |citing 
APASmart Define. (2015). untiring thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/untiring/thesaurus/synonyms
ChicagoSmart Define. 2015. "untiring thesaurus" https://smartdefine.org/untiring/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, untiring thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/untiring/thesaurus/synonyms>.
MLASmart Define. "untiring thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/untiring/thesaurus/synonyms>