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rueful
01
悲しげな
showing sadness and regret inspired by compassion
例
The teacher's rueful tone softened the reprimand.
Her rueful expression showed she regretted her harsh words.
He looked rueful when he realized the impact of his mistake.
She gave him a rueful smile after hearing his sad story.
He shook his head with a rueful sigh, feeling sorry for his friend.
