ohoho
A refined, lady-like laugh often used by upper-class women or in a deliberately pretentious way. Hand covers the mouth.
💡A rich lady at a tea party — 'She laughed ohoho behind her fan.'
おほほと上品に笑った。
She laughed ohoho in an elegant manner.
The noblewoman laughed ___ and covered her mouth with her fan.
令嬢は扇子で口を隠しながら○○と笑った。