性懲りもなく (しょうこりもなく) Japanese meaning | KotomoraMeanings
1
expression, adverb
without learning one's lesson; doggedly; in spite of past failures
Used when someone repeats the same mistake or undesirable behavior despite previous bad experiences. Often carries a critical or exasperated tone.
See also: 性懲りもない
性懲りもなくギャンブルに手を出すなんて、呆れてものも言えない。
I'm speechless that you'd turn to gambling again in spite of your past experiences.