なくしては

conjunction

without; if it were not for

Conditional conjunction meaning 'without X' or 'if X did not exist'. Often used in formal or written contexts. The pattern is Noun + なくしては.

• 努ど力りょくなくしては成せい功こうはあり得えない。

  Without effort, success is impossible.

• 彼かれの助じょ言げんなくしては、この問もん題だいは解かい決けつできなかっただろう。

  Without his advice, we probably couldn't have solved this problem.