Related Clues:

• Not be discreet
• Emulate a rat
• Betray one's awareness
• Show one knows
• State secrets?
• Spill it
• Spill a secret
• Be a stoolie
• Ruin a surprise
• State secrets
• Give a clue about
• Reveal one's feelings
• Get in trouble, in a way, with 'on'
• Squeal, so to speak
• Reveal or pretend