lighten
柯林斯词典
1. V-T/V-I When something lightens or when you lighten it, it becomes less dark in colour. 使變明亮; 變得明亮
The sky began to lighten. 天空開始變得明亮了。
2. V-T If someone lightens a situation, they make it less serious or less boring. 緩和
Anthony felt the need to lighten the atmosphere. 安東尼覺得需要緩和一下氣氛。
3. V-T/V-I If your attitude or mood lightens, or if someone or something lightens it, they make you feel more cheerful, happy, and relaxed. 使輕松; 變得輕松
As they approached the outskirts of the city, Ella's mood visibly lightened. 隨著他們越來越接近市郊，埃拉的心情明顯變得輕松了。
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lighten /ˈlaɪtən/ (lightening,lightened,lightens)
剑桥词典
lighten verb (BECOME BRIGHT)
[ 不及物動詞：後麪不接賓語的動詞 ]to become less dark
變淺，變淡
The sky had lightened and there were breaks in the clouds . 天空變亮了，雲也漸漸散開了。
反義詞
darken
lighten verb (MAKE LESS HEAVY)
lighten sb's burden, load, etc.to make a difficult situation or responsibility easier
減輕（某人的）負擔／壓力（等等）
Getting a new assistant will lighten (= reduce ) the workload considerably. 配備一名新助手會極大地減輕工作壓力。
lighten verb (MAKE PALE)
[ 及物動詞：後麪接賓語的動詞 ]to make something lighter
使變淡，使變淺
The sun always lightens my hair . 在陽光下，我的頭發顔色縂是顯得淺些。
lighten verb (MAKE/BECOME LESS SERIOUS)
[ 不及物動詞：後麪不接賓語的動詞 or 及物動詞：後麪接賓語的動詞 ]to (cause to) become happier and less worried
（使）心情好轉，（使）高興起來
His mood lightened after the phone call . 他打完電話後情緒好了起來。
He tried to lighten the atmosphere by telling a joke . 他想通過講笑話來緩解一下氣氛。
短語動詞
lighten sth uplighten up 返回 lighten