112 entries under deep topic. ×

43
formidable(adjective, feature, characteristic, tough, severe)
33
weighty(adjective, tough, severe, difficult, harsh)
25
fat(adjective, solid, big, short)
23
grievous(adjective, bad, tough, severe, difficult)
21
serious(adjective, strong, hard, great, tough)
21
thick(adjective, person, quality, body, strong)
18
dense(adjective, person, dull, set, body)
18
obese(adjective, solid, big, substantial)
17
important(adjective, great, tough, severe, warm)
15
severe(adjective, strong, hard, tough, difficult)
14
profound(adjective, easy, severe, obscure, difficult)
13
hard(adjective, person, dull, body, strong)
13
laborious(adjective, dull, hard, tough, severe)
12
bulky(adjective, person, body, solid, big)
11
arduous(adjective, dull, tough, severe, rough)
11
tough(noun, adjective, good, person, dull)
10
abstruse(adjective, easy, severe, obscure, difficult)
10
broad(adjective, quality, hard, great, big)
10
difficult(adjective, dull, hard, tough, severe)
10
impenetrable(adjective, set, hard, tough, solid)
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APASmart Define. (2016). heavy thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, heavy thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>.
MLASmart Define. "heavy thesaurus" 25 January 2016. Web. 21 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms>