ウフッ
u fu'

Noun
To-Adverb

1. chuckle; chuckling

Related to うふふ
彼女 かのじょ かれ せい一杯 いっぱいのおめかしをしてきたのを て、ウフッと わらった。
kanojowa karega sēippaino omekashio shite kita nō mite u futto waratta.
When she saw the lengths he'd gone to to get all dressed up, she couldn't help letting a brief chuckle escape.