Related Clues:

• Extremely small
• Dim
• Like Burns's 'tim'rous beastie'
• Like Tim Cratchit
• Not so easy to dig?
• Like leprechauns
• Tim's nickname
• Very petite
• Indistinct
• Discreet
• Causing squinting, perhaps
• Bitty
• Hard to get
•     Understated
• Nuanced