下衆の後知恵
Idiom- 1hindsight is 20-20 (even for a fool) ; an afterwit is everybody's wit Translated by Jiyomi
Other writings and readings
下種の後知恵下司の後知恵げすの後知恵下種のあと知恵
expressions (phrases, clauses, etc.)
JMdict entry 2826109. Source and licence.
JMdict entry 2826109. Source and licence.