JLPT N1
~ならいざしらず / はいざしらず
I don't know about… but; it may be one thing for… but
Structure / Usage
Noun + ならいざしらず / はいざしらず
Example Sentences
子供ならいざしらず、大人がそんなことをするなんて。
It might be understandable for a child, but for an adult to do such a thing...
昔ならいざしらず、今の時代にそれは通用しない。
That might have worked in the past, but it doesn't fly in this day and age.