Potential answers for "Subtle signal in a conversation"

⭐⭐⭐⭐ SOCIALCUE
⭐⭐⭐ WINK
⭐⭐⭐ PSST
⭐⭐⭐ NOD
⭐⭐⭐ CODEWORD
⭐⭐⭐ SLYNOD

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