Related Clues:

• 'I'll second that'
• 'Aye, aye!'
• Final word of 'Ulysses'
• Direct mail sticker
• OK
• 'Let's do it!'
• Encouraging word
• 'Right'
• 'Undeniably'
• Just ducky
• Thumbs-up response
• Never-failing
• 'Amen!'
• Agreeable reply
• 'No sweat'