Having a bright, playful, or mischievous quality that seems to flash or shimmer with delight, especially in one's eyes or expression. It suggests gentle humor and warmth.
From Old English 'twinclian' meaning 'to wink' or 'blink rapidly.' The word evolved from describing rapid light movements to characterizing expressions that seem to dance with amusement or affection.
Twinkling eyes are actually a real phenomenon—when we're genuinely amused or affectionate, the muscles around our eyes contract in micro-expressions that create that dancing light effect. It's one of the most reliable indicators of authentic positive emotion that others unconsciously recognize and respond to.
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