Related Clues:

• Willing reply
• 'Sure thing'
• Without question
• Not up in the air
• Fully confident
• "Be glad to"
• "OK, fine"
• Unerring
• 'Yessiree ...'
• Casual affirmative
• ''Certainly''
• "OK!"
• 'Okay'
• Definite
• ''Naturally!''