Related Clues:
- Empty-headed sort
- Ding-dong
- One who is hardly an Einstein
- Dostoyevsky subject
- Not the sharpest knife in the drawer
- No genius, he
- Blithering fool
- ___-proof (easy to operate)
- Teller of a tale 'full of sound and fury,' per Macbeth
- Senseless person
- Clot
- Box or proof preceder
- Definite Mensa reject
- Block-head
- Easily-manipulated type