さることながら

さる事ながら / 然る事ながら / 然ることながら / 然る事乍ら

Meanings

Expression
1. It goes without saying; but not only that; but also ....
  
  kana-only

事	matter, thing, fact, business, reason, possibly
然	sort of thing, so, if so, in that case, well
乍	though, notwithstanding, while, during, both, all

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