くすくす

• Reading: くすくす
• Romaji: kusukusu
• Pronunciation: /kɯ.sɯ.kɯ.sɯ/

Meaning

Chuckling; giggling softly. An onomatopoeia describing quiet, suppressed laughter.

A mimetic adverb (擬態語) representing the sound and manner of stifled giggling or chuckling. Typically used with 笑う (to laugh) as くすくす笑う. Conveys a sense of amusement that the person is trying to contain, often behind a hand or in a group sharing a private joke. Distinct from げらげら (loud laughter) or にこにこ (smiling).

Examples

1. 後ろの席でくすくす笑う声が聞こえた。 I could hear soft giggling coming from the seats behind me.
2. 彼女は恥ずかしそうにくすくすと笑った。 She giggled shyly, looking embarrassed.
3. 先生の冗談に生徒たちがくすくす笑い出した。 The students started giggling at the teacher's joke.

Usage Guide

Context: daily life, school, social situations

Tone: playful

Origin & History

A Japanese onomatopoeia (擬音語) imitating the soft, breathy sound of suppressed laughter. The reduplication pattern is common in Japanese mimetic words to indicate continuation or repetition of the action.

Cultural Context

Era: Ancient

Generation: All ages

Social background: Universal