Synonyms of feeble-minded

1 Syllable
slow, dumb, dull
2 Syllables
duller, numbskull, simple, gorked, dullest, dumdum, lagging
3 Syllables
slow-witted, half-baked, retardo, dim-witted, retarded, half-witted
4 Syllables
imbecile, simple-minded, simpleminded
5 Syllables
unintelligent, underachieving, unprogressive