How to read: いうかう
Pronunciation: 
Names and idioms with total stroke of 16:
氷雪 酒好 剛光 特旨 付加刑
Names and idioms similar to 有效:
有季江 效果 有煙炭 美夢有 有縁無縁
Yojijukugo(idioms with 4 Kanji characters) including 有效:
前途有望 有害無益 有備無患
Idioms including 有效:
烏有に帰す 有無を言わせず 未曾有