等閑に付す (とうかんにふす) Japanese meaning | KotomoraMeanings
1
expression, godan verb (-su)
neglect; overlook; treat lightly
A formal, somewhat literary set phrase meaning to disregard or treat something as unimportant. Often used in written or formal contexts.
この問題を等閑に付すわけにはいかない。
We cannot afford to overlook this problem.