Related Clues:

• '-- Tac Dough'
• First correct ''Hollywood Squares'' square
• Deviation from the norm
• Start of a winning combination
• Hallmark
• It can't be helped
• Blue eyes or dark hair, e.g.
• Nervous twitch
• Small spasm
• Nervous reaction
• One X of XXX
• Half a breath mint?
• Unusual object
• Curio
• -- -tac-toe