14
half-assed
11
half ass
6
stupid
6
slow
5
dim-witted
5
dull
5
dumb
5
slow-witted
5
thick
4
moronic
4
obtuse
3
addle-pated
3
boneheaded
3
fatuous
3
feeble-minded
3
gaumless
3
idiotic
3
imbecilic
3
thickheaded
3
weak-minded
11 years ago|8.5k views|share |citing 
APASmart Define. (2015). gormless thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/gormless/thesaurus/synonyms
ChicagoSmart Define. 2015. "gormless thesaurus" https://smartdefine.org/gormless/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, gormless thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/gormless/thesaurus/synonyms>.
MLASmart Define. "gormless thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/gormless/thesaurus/synonyms>