Crossword puzzle clue "nonverbal greeting"

Here are the possible solutions for nonverbal greeting clue

Answer
Clue
Relevancy
wave
Clue
Nonverbal greeting
asl
Clue
Nonverbal communication, for short
Nonverbal way to communicate: Abbr.
Nonverbal syst.
Nonverbal communication: Abbr.
Nonverbal communication system: Abbr.
Nonverbal communication syst.
Nonverbal comm. method

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