後あと知ぢ恵え

noun

hindsight; wisdom after the fact

Refers to the wisdom or cleverness one has only after an event has passed, often with a nuance of regret or irony. Commonly used in the phrase 後知恵を働かせる (to be wise after the event).

• 事じ故こが起おきてから安あん全ぜん対たい策さくを考かんがえるのは後あと知恵ぢえだ。