10
idle(adjective, calm, quiet, gentle, dirty)
9
languid(adjective, dull, quiet, flat, slow)
9
quiescent(adjective, still, lazy, inactive, negligent)
9
unmoving(adjective, calm, quiet, dirty, still)
8
filthy(adjective, quiet, dirty, foul, still)
8
putrid(adjective, quiet, strong, offensive, sweet)
8
moribund(adjective, torpid)
7
dirty(adjective, quiet, foul, still, stationary)
7
flat(adjective, dull, quiet, hard, slow)
7
languorous(adjective, dull, slow, heavy, apathetic)
7
lethargic(adjective, quiet, easy, slow, heavy)
6
inanimate(adjective, calm, still, lifeless, inactive)
6
phlegmatic(adjective, dull, quiet, easy, slow)
6
slow(adjective, dull, quiet, flat, heavy)
5
foul(adjective, quiet, strong, offensive, sweet)
5
apathetic(adjective, dull, quiet, easy, flat)
5
becalmed(adjective, calm, still, lifeless, inactive)
5
calm(adjective, quiet, smooth, gentle, still)
5
fixed(adjective, calm, quiet, smooth, mild)
5
numb(adjective, calm, still, sluggish, lazy)
11 years ago|15k views|share |citing 
APASmart Define. (2015). stagnant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stagnant/thesaurus/synonyms
ChicagoSmart Define. 2015. "stagnant thesaurus" https://smartdefine.org/stagnant/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, stagnant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stagnant/thesaurus/synonyms>.
MLASmart Define. "stagnant thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/stagnant/thesaurus/synonyms>