Related Clues:

• It might be heard when a light bulb goes on
• Word said just before solving a tricky clue
• Exclamation when a light goes on?
• It may be expressed in a moment
• Surprised expression
• 'Oh, I see!'
• Shout of inspiration
• Nod accompanier
• 'Found ya!'
• 'Take on Me' band
• ''So that's what you meant''
• 'Oh, so that's it!'
• "Now I see"
• ''I have an idea''
• Cry after an epiphany