Related Clues:
- Agrees without words
- Silent okays
- Shows interest ... or a lack of it
- Wordless greetings
- Acknowledges with a head tilt
- Goes through some ups and downs?
- Signals from supporters
- Bits of homage
- Says yes silently
- Indicators of acknowledgment
- Head motions at auctions
- After refusal, detective signals assent
- Agrees wordlessly
- ___ off (dozes)
- Slips up and gives approval