Related Clues:
- Betrays surprise
- Reacts to astonishing news
- Sounds from a wowed crowd
- Swallows deeply
- 'Oh no you didn't!' sounds
- Takes huge drinks
- Betrays astonishment
- Maybe oxygen starts to prevent such?
- 23-Down relatives
- Crowd reactions to a daredevil
- Breathes in quickly
- Reacts in horror as it's included in navigational tool
- Sharp intakes
- Breaths you can hear
- Shows nervousness, in a way