retarded
silly
half-wit
brainless
chuckleheaded
delude
eldest
epileptic
fatuous
feckless
feeble-minded
friendless
good-for-nothing
good-hearted
half-naked
idiotic
ill-conditioned
ill-proportioned
ill-tempered
infirm
loose-lipped
misguided
motherless
necessitous
thoughtless
witless
wool-headed