166 entries under tough topic. ×

6
peppy(adjective, strong, fit, energetic)
6
red-blooded(adjective, strong, intense, energetic)
6
staunch(noun, adjective, health, strong, sound)
6
virile(adjective, strong, powerful, vigorous)
6
well-built(adjective, person, body, strong, sound)
6
boisterous(adjective, strong, fit, rude)
6
flourishing(adjective, strong, great, sound)
6
forcible(adjective, strong, sound, strength)
6
in fine fettle(expression, adjective, idiom, strong, sound)
6
iron(adjective, strong, hard, inflexible)
6
rough(adjective, strong, hard, simple)
5
fresh(health, strong, great, right)
5
mettlesome(adjective, strong, intense, energetic)
4
big(adjective, person, body, strong, sound)
4
bouncing(adjective, strong, intense, energetic)
4
brisk(adjective, strong, intense, energetic)
4
healthful(adjective, health, strong, fit)
4
intense(adjective, strong, great, energetic)
4
snappy(adjective, strong, fit, energetic)
4
spirited(adjective, strong, energetic, powerful)
10 years ago|33k views|share |citing 
APASmart Define. (2016). robust thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/robust/thesaurus/synonyms
ChicagoSmart Define. 2016. "robust thesaurus" https://smartdefine.org/robust/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, robust thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/robust/thesaurus/synonyms>.
MLASmart Define. "robust thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/robust/thesaurus/synonyms>