Related Clues:

• Words of enlightenment
• Exclamation of surprise
• It's positive
• 'Now it's clear!'
• 'Oh, right!'
• 'Aha!'
• Up, as a vote
• Certain
• Secret competitor
• 'Why not?'
• Go-ahead
• 'Ah!'
• Expression of understanding
• 'Boy, am I stupid!'
• 'Undoubtedly'