166 entries under dull topic. ×

31
ponderous(adjective, quiet, easy, severe)
21
oppressive(adjective, nature, severe, warm)
21
burdensome(adjective, tough, severe, difficult)
19
hefty(adjective, person, body, strong)
18
dense(adjective, person, set, body)
17
leaden(adjective, quiet, weak, easy)
15
sad(adjective, dough, pastry, cake)
14
gloomy(adjective, nature, bad, sad)
13
boring(adjective, flat, ordinary, dry)
13
hard(adjective, person, body, strong)
13
laborious(adjective, hard, tough, severe)
13
listless(adjective, characteristic, quiet, weak)
13
onerous(adjective, tough, severe, difficult)
13
tedious(adjective, severe, flat, difficult)
13
torpid(adjective, quiet, weak, easy)
12
deep(adjective, set, strong, tough)
12
lifeless(adjective, quiet, flat, slow)
12
slow(adjective, characteristic, quiet, weak)
12
sluggish(adjective, quiet, weak, easy)
11
arduous(adjective, tough, severe, rough)
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APASmart Define. (2016). heavy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms
ChicagoSmart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, heavy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>.
MLASmart Define. "heavy thesaurus" 25 January 2016. Web. 24 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms>