1.
giggling, chuckling quietly
Laughing quietly in a suppressed manner, often secretly.
くすくす is onomatopoeia for quiet, suppressed giggling.
Usage
Describes the sound of quiet laughter, often suppressed or secretive. Commonly associated with children, young women, or people trying to hide their amusement.
Can imply:
- Secretive laughter (at someone's expense)
- Suppressed amusement
- Childish or shy laughter