na-adjective
cool-looking; refreshing (temperature)
Describes something that looks or feels pleasantly cool in temperature, often used for clothing, drinks, or breezes.
See also: 涼しい
彼女は涼しげなワンピースを着ていた。
She was wearing a cool-looking dress.
風鈴の音が涼
The sound of the wind chime rings refreshingly.
na-adjective
clear; bright (sound, appearance)
Used for sounds or visual impressions that feel clear, bright, and unclouded, such as a voice or a color.
See also: 涼しい
彼の涼しげな声が会場に響いた。
His clear voice echoed through the hall.
涼しげな青い目をした人形だった。
It was a doll with bright, clear blue eyes.
na-adjective
composed; cool (demeanor); unruffled
Describes a person's calm, unflustered attitude or expression, often implying a sense of detachment or poise.
See also: 涼しい
彼はいつも涼しげな顔で難しい仕事をこなす。
He always handles difficult tasks with a composed look.
彼女は怒られても涼しげだった。
She remained unruffled even when scolded.
涼しい is the base adjective meaning 'cool' (temperature) or 'clear' (sound/eyes), while 涼しげ adds a nuance of 'looking/seeming' that way, often used attributively.
Formed from the stem of 涼しい (suzushii, 'cool') + げ (ge, 'seeming, looking'), a suffix that attaches to adjectives to express an apparent quality.