80 entries under heavy topic. ×

3
stagnant(adjective, dull, quiet, moderate, easy)
2
blah(adjective, dull, weak, easy, flat)
2
draggy(adjective, dull, flat, slow)
2
enervated(dull, weak, still, listless)
2
hebetudinous(adjective, dull, slow, apathetic)
2
limp(adjective, action, dull, weak, easy)
2
pressing
2
sober(adjective, dull, quiet, soft, severe)
2
stiff(adjective, dull, severe, slow)
2
weary(adjective, dull, weak, easy, slow)
1
blahs(adjective, dull, weak, easy, slow)
1
comatose(adjective, dull, weak, easy, slow)
1
down(adjective, dull, slow, still)
1
dragging(adjective, dull, slow, sluggish)
1
drippy(adjective, dull, slow, sluggish)
1
easy(adjective, dull, quiet, weak, slow)
1
energyless(adjective, dull, weak, easy, slow)
1
feeble(adjective, dull, weak, soft, easy)
1
grim(adjective, dull, quiet, gray)
1
hazy(adjective, dull, soft, obscure, flat)
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APASmart Define. (2015). leaden thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/leaden/thesaurus/synonyms
ChicagoSmart Define. 2015. "leaden thesaurus" https://smartdefine.org/leaden/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, leaden thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/leaden/thesaurus/synonyms>.
MLASmart Define. "leaden thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/leaden/thesaurus/synonyms>