Related Clues:
- Sound from a cat with an arched back
- Vocal thumbs-down
- Sound of a snake
- Cobra's warning
- Expression of dissatisfaction
- Leak indicator
- Greeting some of Hitler's men showing contempt?
- Make disapproving sound
- Man's direction to express disapproval
- Audio interference
- Snakelike noise
- Wordless sound of disapproval
- Show disapproval of interference
- Urgent whisper greeting snakes, requiring evacuation?
- Sound of escaping gas