いざ知らず

Meaning

1. exp
   I don't know about ... but; it may be possible for ... but

Example sentences

• 彼ならいざ知らず、私ではその試験には合格できっこない。

  For him it may be possible, but I'd never pass the test.

• 昔ならいざ知らず、今はＦＡＸも、メールもある。

  I don't know about the past, but now we have faxes and emails.