How to read: そっこう
Pronunciation: 
Same names and idioms in reading:
即効 側溝 速行 測候 側光
Names and idioms with total stroke of 18:
凱充 墨井 杏梛 既事 尚乙美
Names and idioms similar to 速効:
最速 速星 効無 速須佐 副効用
Yojijukugo(idioms with 4 Kanji characters) including 速効:
迅速果断 迅速果敢 成効卓著
Idioms including 速効:
潰しが効く 兵は拙速を貴ぶ
Proverbs including 速効:
巧遅は拙速に如かず 兵は神速を尊ぶ 能書きほど薬は効かぬ