166 entries under tough topic. ×

19
enduring(adjective, strong, sound, strain)
19
rigid(adjective, strong, hard, strain)
19
steady(adjective, strong, sound, secure)
19
unyielding(adjective, strong, hard, sound)
18
mighty(adjective, person, body, strong, great)
17
fit(adjective, strong, great, sound, complete)
15
able-bodied(adjective, person, body, strong, great)
15
athletic(adjective, person, body, strong, sound)
15
lusty(adjective, strong, great, simple)
14
energetic(adjective, strong, sound, fit)
13
well(adjective, adverb, health, strong, sound)
12
sinewy(adjective, strong, hard, sound)
10
potent(adjective, strong, great, sound, strength)
10
active(adjective, strong, sound, fit)
10
solid(adjective, person, body, strong, sound)
9
vital(adjective, strong, complete, fit)
8
dynamic(adjective, strong, great, energetic)
8
prosperous(adjective, characteristic, quality, strong)
6
forceful(adjective, strong, great, sound)
6
lively(adjective, strong, fit, energetic)
10 years ago|33k views|share |citing 
APASmart Define. (2016). robust thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/robust/thesaurus/synonyms
ChicagoSmart Define. 2016. "robust thesaurus" https://smartdefine.org/robust/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, robust thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/robust/thesaurus/synonyms>.
MLASmart Define. "robust thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/robust/thesaurus/synonyms>