67 entries under strong topic. ×

24
tough(adjective, action, dull, great)
20
active(adjective, action, tough, difficult)
18
energetic(adjective, action, tough, smart)
16
vigorous(adjective, action, tough, smart)
12
spirited(adjective, tough, difficult, energetic)
12
zealous(adjective, activity, tough, smart)
11
dynamic(adjective, action, tough, smart)
10
animated(adjective, moving, difficult, energetic)
10
forceful(adjective, action, tough, smart)
10
industrious(adjective, difficult, lively, determined)
8
intense(adjective, tough, difficult, harsh)
8
lusty(adjective, tough, intense, energetic)
8
rugged(adjective, action, tough, severe)
8
tireless(adjective, difficult, energetic, lively)
7
lively(adjective, action, tough, energetic)
7
peppy(adjective, action, tough, informal)
7
powerful(adjective, great, tough, difficult)
7
vital(adjective, tough, intense, energetic)
6
aggressive(adjective, energetic, lively, active)
6
backbreaking(adjective, hard, rough, difficult)
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APASmart Define. (2016). strenuous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/strenuous/thesaurus/synonyms
ChicagoSmart Define. 2016. "strenuous thesaurus" https://smartdefine.org/strenuous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, strenuous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/strenuous/thesaurus/synonyms>.
MLASmart Define. "strenuous thesaurus" 1 April 2016. Web. 24 September 2026. <https://smartdefine.org/strenuous/thesaurus/synonyms>