Related Clues:

• Stunned sound
• Inhale in horror
• This might follow a bad pun
• Express shock or surprise
• [That's an old one!]
• Last ___
• Recover from a sprint, perhaps
• Breathe laboriously
• Swimmer's sound
• Breathe convulsively
• Surprised sound
• Surprised reaction
• Sudden inhalation
• [Oh, my stars!]
• Show sharp shock