How to read: つとに
Pronunciation: 
Same names and idioms in reading:
津戸に 髱に 苞に
Names and idioms with total stroke of 9:
矢内 卯内 下団 千五十 生化
Names and idioms similar to 夙に:
夙川 夙子 夙起 夙少 夙分
Yojijukugo(idioms with 4 Kanji characters) including 夙に:
夙夜夢寐 夙興夜寝