87 entries under heavy topic. ×

1
energyless(adjective, dull, weak, easy, slow)
1
faint(dull, weak, still, listless)
1
flagging(dull, weak, still, idle)
1
having spring fever(expression, adjective, idiom, dull)
1
languishing(adjective, dull, weak, easy, slow)
1
leisurely(adjective, dull, quiet, weak, easy)
1
mooney(adjective, dull, slow, sluggish)
1
nebbish(adjective, dull, weak, easy, slow)
1
pining(adjective, dull, weak, easy, slow)
1
pokey(adjective, dull, slow, sluggish)
1
regular(adjective, dull, quiet, flat, slow)
1
sleepyhead(adjective, dull, weak, easy, slow)
1
sleepyheaded(adjective, dull, slow, sluggish)
1
stupid(adjective, dull, apathetic, sluggish)
1
unenthusiastic(adjective, dull, weak, easy, slow)
1
unhurried(adjective, dull, quiet, weak, easy)
1
unsympathetic(adjective, dull, quiet, flat)
1
wimpy(adjective, dull, weak, easy, slow)
0
dense(adjective, dull, stupid, impassive)
0
doltish(adjective, dull, stupid, impassive)
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APASmart Define. (2015). inert thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/inert/thesaurus/synonyms
ChicagoSmart Define. 2015. "inert thesaurus" https://smartdefine.org/inert/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, inert thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/inert/thesaurus/synonyms>.
MLASmart Define. "inert thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/inert/thesaurus/synonyms>