Related Clues:

• Astronaut's 'thumbs-up'
• ''I guess so''
• NASA's 'fine'
• Thumb-and-forefinger sign
• Massive wave
• 'That's fine by me'
• "That's fine by me"
• "Great!"
• Just peachy
• Green-light phrase
• 'Good here, Houston'
• Give a thumbs-up
• "All right!"
• "Sure, why not?"
• "Sounds good!"