179 entries under strong topic. ×

11
bitter(adjective, love, tough, severe)
11
concrete(adjective, clear, tough, solid)
11
dense(adjective, person, body, tough)
11
immovable(adjective, mean, tough, cruel)
11
implacable(adjective, mean, tough, severe)
11
powerful(adjective, person, body, great)
9
forcibly(adverb, fast, severely, intensely)
9
hardy(noun, adjective, person, body)
8
close(adjective, adverb, tough, correct)
8
determined(adjective, tough, severe, harsh)
8
hard-boiled(adjective, mean, sound, tough)
8
thick(adjective, person, body, tough)
8
unbreakable(adjective, severe, firm, harsh)
7
set(adjective, mean, tough, severe)
7
acute(adjective, great, pain, intense)
7
concentrated(adjective, set, great, tough)
7
hardheaded(adjective, sound, tough, reasonable)
7
insensible(adjective, tough, severe, careless)
6
deep(adjective, tough, severe, intense)
6
extreme(adjective, great, tough, severe)
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APASmart Define. (2016). hard thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hard/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, hard thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>.
MLASmart Define. "hard thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms>