Related Clues:

• ''Oohs'' companion
• Exam words
• Sounds of gratification
• Contented responses
• Contented murmurs
• Surprising sounds
• Wistful sounds
• Sounds leading up to a sneeze
• Hot-tub reactions
• 'I see' sounds
• Satisfied reactions
• Joyous sounds
• 'I get it' responses
• Understanding responses
• Fireworks reactions