Related Clues:

• Much less than brilliant
• End of crossword — I am needing a bit of illumination?
• Low-wattage
• Like a thick fog
• Dim boss recruits gumshoe
• Senior copper drives round, missing intelligence
• Built up places near Cork needs no introduction, as slow on the uptake
• Lower, like lights
• Days in March initially quite dark
• ___ sum
• Faint, as light
• Fog modifier
• In retrospect, key to opening interesting places is not that clever
• Thick and heavy
• ___ fog advisory