subtle cue
- hintIndirect suggestion
- nuanceSlight shade of difference
- gestureCommunicative body movement
- whisperSpeech without full voice
- glanceBrief, casual look
signal · nod · undertone · implication · suggestion · wink · flicker · innuendo · undercurrent · trace · tell · microexpression · sidelong · insinuation · subtext · unspoken · twitch · faint
obviousness
subtle cueclear signal
Unambiguous transmitted message
neon sign · red flag · dead giveaway · smoking gun · alarm bell