279 entries under adjective topic. ×

4
hearty(strong, tough, intense, energetic)
4
intensive
4
mean(strong, hard, severe, rough)
4
painful(hard, tough, severe, difficult)
4
rigorous(hard, tough, severe, rough)
4
robust(strong, tough, intense, energetic)
4
serious(hard, severe, rough, difficult)
4
sprightly(action, strong, moving, lively)
4
sticky(tough, rough, difficult, heavy)
4
straining
4
ticklish
4
wearing(dull, difficult, awkward, boring)
4
zestful(energetic, vigorous, lusty)
3
ambitious(tough, severe, ability, painful)
3
bold(tough, smart, energetic, active)
3
combative(antagonistic, aggressive, argumentative)
3
complicated(hard, tough, severe, rough)
3
hard-working(thorough, exertion, meticulous, painstaking)
3
labored(hard, great, tough, rough)
3
persevering(thorough, meticulous, painstaking)
10 years ago|15k views|share |citing 
APASmart Define. (2016). strenuous thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/strenuous/thesaurus/synonyms
ChicagoSmart Define. 2016. "strenuous thesaurus" https://smartdefine.org/strenuous/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, strenuous thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/strenuous/thesaurus/synonyms>.
MLASmart Define. "strenuous thesaurus" 1 April 2016. Web. 26 September 2026. <https://smartdefine.org/strenuous/thesaurus/synonyms>