Synonyms|862Antonyms|116|Broader|10Narrower|8Related|256

144 entries under tough topic. ×

7
steady(adjective, strong, sound, secure)
6
bold(adjective, strong, firm, vigorous)
6
durable(adjective, strong, sound, secure)
6
hardy(adjective, strong, sound, solid)
6
intractable(adjective, firm, difficult, persistent)
6
stiff-necked(adjective, firm, resist, unreasonable)
6
unbending(adjective, clear, strong, severe)
6
undaunted(adjective, strong, firm, steady)
5
balky(firm, unreasonable, grim, inflexible)
5
dauntless(adjective, strong, vigorous, bold)
5
dedicated(adjective, clear, strong, severe)
5
energetic(adjective, strong, sound, solid)
5
gluey(adjective, thick, syrupy, tacky)
5
gritty(adjective, strong, determined, steady)
5
gutsy(adjective, strong, determined, vigorous)
5
iron(adjective, strong, firm, solid)
5
lasting(adjective, firm, true, fixed)
5
opinionated(firm, unreasonable, grim, persistent)
5
recalcitrant(adjective, firm, difficult, wild)
5
stable(adjective, strong, sound, secure)
For more, visit Tenacious on Power Thesaurus
10 years ago|22k views|share |citing 
APASmart Define. (2015). tenacious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/tenacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "tenacious thesaurus" https://smartdefine.org/tenacious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, tenacious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/tenacious/thesaurus/synonyms>.
MLASmart Define. "tenacious thesaurus" 6 November 2015. Web. 28 September 2026. <https://smartdefine.org/tenacious/thesaurus/synonyms>