73 entries under simple topic. ×

5
simple-minded(adjective, dull, slow, silly)
4
half-witted(adjective, dull, slow, silly)
4
numbskull(noun, dull, limited, dolt)
4
pinhead(noun, person, dull, fool)
4
thick(adjective, dull, silly, foolish)
4
turkey(noun, slang, ability, fool)
4
unintelligent(adjective, dull, silly, foolish)
3
dunderhead(noun, fool, innocent, jerk)
3
feeble-minded(adjective, dull, foolish, stupid)
3
loon(noun, fool, innocent, jerk)
3
mindless(adjective, dull, silly, foolish)
3
oaf(noun, person, fool, stupid)
3
twerp(noun, fool, innocent, jerk)
2
boob(noun, fool, innocent, jerk)
2
buffoon(noun, fool, innocent, jerk)
2
clown(noun, fool, innocent, jerk)
2
dense(adjective, dull, silly, stupid)
2
lamebrain(noun, person, fool, innocent)
2
obtuse(adjective, dull, silly, foolish)
1
birdbrained(dull, silly, foolish, crazy)
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APASmart Define. (2015). imbecile thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/imbecile/thesaurus/synonyms
ChicagoSmart Define. 2015. "imbecile thesaurus" https://smartdefine.org/imbecile/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, imbecile thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/imbecile/thesaurus/synonyms>.
MLASmart Define. "imbecile thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/imbecile/thesaurus/synonyms>