Related Clues:

• Like a clumsy lout
• Like a neutron star
• Close-packed
• Not clear to the stupid
• Thick, so studies English
• Stupid broad!
• Needs (anag.)
• Not very bright but studies English
• Broad; dense
• Ill-mannered adult tucking into egg and cod?
• Friendly but stupid?
• Dense Henry got right mark going round
• Not very bright, needs to be properly organised
• Impenetrable Oriental studies have precedence
• Concentrated hard within short time