also: ふふ · ふふっ
Onomatopoeic laughter, often used to express a soft, suppressed, or slightly mischievous laugh. Can be used in casual writing, manga, or online chat.
Heh heh, that's a funny story.
She giggled mischievously, 'hee hee hee.'
Standard hiragana spelling for this laughter interjection.
Shorter variant, less common but still used.
Katakana variant, often used for a slightly different tone or in manga.
Katakana shorter variant.
Search-only form with small tsu, representing a clipped laugh.
Katakana search-only form with small tsu.
Onomatopoeic, representing the sound of soft laughter. The exact origin is uncertain, but it is a natural vocalization.