唏唏哈哈 xīxīhāhā sound of laughter Origin Definitions Defs Strokes Stroke Words Sentences Sents 唏 xī reduplication [laughter] A sound associated with laughing, often used in the reduplicated form 唏唏哈哈 xīxīhāhā哈 hā reduplication ha-ha onomatopoeia for the sound of laughter