Related Clues:
- Head gestures
- Is polite after a boring play
- Agrees without words
- Silent okays
- Awards show sounds
- Shows interest ... or a lack of it
- Wordless greetings
- What joy brings
- Goes through some ups and downs?
- Rewards a performer
- Gives a round of applause
- Signals from supporters
- Bits of homage
- Says yes silently
- Indicators of acknowledgment