36
hard(adjective, strain, firmness, labour, hardiness)
20
fast(adjective, strain, firmness, labour, hardiness)
18
tight(adjective, strain, firmness, labour, hardiness)
6
firmly(adverb, strongly)
6
tolerant
5
mightily(adverb, strongly)
5
powerfully(adverb, strongly)
5
robustly(adverb, fully, powerfully, strongly, firmly)
5
stably(adverb, strongly, firmly)
5
strongly(adverb, powerfully, strongly, firmly, mightily)
5
toughly(adverb, powerfully, strongly, muscularly)
4
forcefully
4
lustily
4
stiffly(adverb, firmly, stably)
4
stoutly(adverb, strongly)
3
brawnily(adverb, strongly)
3
heartily
3
huskily(adverb, strongly)
3
intensely
3
muscularly(adverb, strongly)
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APASmart Define. (2015). sturdily thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sturdily/thesaurus/synonyms
ChicagoSmart Define. 2015. "sturdily thesaurus" https://smartdefine.org/sturdily/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sturdily thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sturdily/thesaurus/synonyms>.
MLASmart Define. "sturdily thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/sturdily/thesaurus/synonyms>