Word:

  dolt

1. dolt (n)
  a person who is not very bright.

Words derived from dolt
stupid,  stupid,  unintelligent

dolt is an instance of
simple,  simpleton

Word and things that fall within dolt
berk,  blockhead,  bonehead,  dumbass,  dunce,  dunderhead,  fuckhead,  hammerhead,  knucklehead,  loggerhead,  lunkhead,  muttonhead,  numskull,  shithead,  klutz