Related Clues:

• Tough to get through to
• Hard to get through to
• Dorky
• Like a thicket
• Utterly ridiculous
• Like heavy fog
• Closely crowded together
• Really crammed in
• Just plain stupid
• Imbecilic
• Slow to catch on
• Totally ridiculous
• Crowded together
• Very foolish
• Thick, as fog