河童の寒稽古 かっぱのかんげいこ Meanings Expression, Noun something that looks difficult but actually isn't (i.e.: swimming in a cold lake during mid-winter seems difficult, but it's nothing to a kappa) Kanji 河 river. Read as カ. 童 youngster 寒 cold. Read as カン. 稽 rehearse. Read as ケイ. 古 old. Read as コ. Word lists Idioms Jinuma: Japanese Dictionary · Word lists