Written representation of laughter, expressing amusement, joy, or sometimes sarcasm in digital communication.
Onomatopoeia representing the sound of laughter, appearing in written English by the 17th century. The repetition mimics the natural rhythm of human laughter and has become standardized in digital communication.
Different cultures write laughter sounds differently—'jajaja' in Spanish, '555' in Thai (because 'five' sounds like 'ha'), and 'kkk' in Korean. The length and repetition of 'hahaha' in texts often indicates the intensity of amusement, creating a whole grammar of digital laughter.
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