backward 8 Associations

feebleminded retarded (similar term)

cretinous 9 Associations

retarded (similar term)

delayed 7 Associations

retarded (similar term)

dim-witted 10 Associations

half-witted simple simple-minded retarded (similar term)

feebleminded 12 Associations

backward retarded (similar term)

half-witted 11 Associations

dim-witted simple simple-minded retarded (similar term)

simple 6 Associations

dim-witted half-witted simple-minded retarded (similar term)

simple-minded 13 Associations

dim-witted half-witted simple retarded (similar term)