Related Clues:

• "Of course!"
• Fully convinced
• "Indubitably"
• Answer to some test questions
• "Fine with me"
• 'Certainly!'
• 'Okey-doke'
• Verifiable
• "You bet!"
• "No problemo!"
• 'Works for me'
• Foolproof
• Doubt-free
• Test response
• Precisely correct