1Pleasantly cool or refreshing — describes comfortable, non-oppressive coolness in temperature or a breeze.
今日は風が涼しくて気持ちがいい。
The breeze feels cool and pleasant today.
山の上は夏でも涼しい。
It's cool up in the mountains even in summer.
エアコンをつけたら部屋がすぐに涼しくなった。
The room quickly became cool once I turned on the air conditioner.
木陰に入ると少し涼しく感じる。
It feels a bit cooler when you step into the shade of a tree.
涼しいうちに散歩に出かけよう。
Let's go for a walk while it's still cool.
2Clear and bright, used to describe eyes with a cool, refreshing impression, as in 「涼しい目」 (clear-eyed).
彼女は涼しい目をした人だと言われる。
People say she has clear, cool-looking eyes.
涼しい目元が印象的な俳優だった。
He was an actor with striking, clear eyes.
3Clear and crisp, describing a sound or voice that carries distinctly.
風鈴の涼しい音が夏らしさを感じさせる。
The clear sound of the wind chime feels like summer.
彼のアナウンスは涼しい声で聞き取りやすかった。
His announcement was in a clear voice and easy to understand.
4Composed and unruffled in expression or attitude, unaffected by pressure; commonly used in the phrase 「涼しい顔」 (a cool, unconcerned face).
彼はミスをしても涼しい顔をしていた。
Even after making a mistake, he kept a composed, unruffled expression.
どんなに批判されても涼しい顔で受け流していた。
No matter how much he was criticized, he brushed it off with an unconcerned look.
5Archaic sense: pure, upright, and innocent in character; rarely used in modern everyday speech.
昔の物語には涼しい心を持つ人物がよく描かれた。
Old tales often depicted characters with a pure, upright heart.