4
simple(adjective, dull, slow, foolish, stupid)
4
steady(adjective, unexcitable)
4
thick-skinned
4
thick-witted(adjective, stupid)
4
unaffected(adjective, tough, rational, straightforward, sober)
4
undisturbed
4
uninvolved(adjective, calm, quiet, indifferent, casual)
4
unruffled(adjective, calm, quiet, cool, relaxed)
3
backward(adjective, simple, slow, stupid, sluggish)
3
brainless(adjective, dull, simple, slow, foolish)
3
cloddish
3
cold-blooded(adjective, cool, tough, rational, straightforward)
3
even-tempered(adjective, unexcitable)
3
imbecilic(adjective, dull, simple, slow, foolish)
3
lacking interest
3
passionless(adjective, calm, dull, quiet, cool)
3
petty(adjective, smallness)
3
plodding(adjective, sluggish, dullness, unintelligent, obtuse)
3
self-controlled(adjective, calm, quiet, cool, relaxed)
3
simple-minded(adjective, simple, slow, stupid, sluggish)
10 years ago|21k views|share |citing 
APASmart Define. (2016). stolid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/stolid/thesaurus/synonyms
ChicagoSmart Define. 2016. "stolid thesaurus" https://smartdefine.org/stolid/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, stolid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/stolid/thesaurus/synonyms>.
MLASmart Define. "stolid thesaurus" 3 March 2016. Web. 25 September 2026. <https://smartdefine.org/stolid/thesaurus/synonyms>