1.
showing one's hand late (esp. cheating at janken); acting only after others
Deliberately making one's move after seeing what an opponent has done, so as to gain an unfair advantage. Originally the cheating move in janken; widely used figuratively for opinions or decisions made only once the outcome is clear.
後出しはずるい。
Showing your hand late is unfair.
"後" (after) + "出し" (putting out). Literally throwing one's janken hand after the opponent. Takes する: 後出しをする.
Common collocations
- 後出しじゃんけん: cheating at janken by throwing late (also a common metaphor for hindsight criticism)
- 後出しをする: to show one's hand late
- 後出しで批判する: to criticize with the benefit of hindsight
Usage
Carries a strong negative nuance of unfairness. The figurative 後出しじゃんけん is often aimed at people who state an opinion only once the safe answer is obvious.