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Related Clues:
- Indicate agreement with
- Acknowledge tacitly
- Show agreement with
- Relay a bid, as to an auctioneer
- Give a head signal to
- Greet silently
- Tacitly acknowledge
- Greet nonverbally
- Greet from a distance
- Acknowledge silently
- Say 'yes' to silently
- Acknowledge in passing
- Agree with, tacitly
- Silently agree to
- Tacitly agree with