さもないと

さもないと
conjunction
otherwise; or else
formalgrammatical
1. otherwise; or else; if not
Used to warn about negative consequences if something is not done.
Hurry up. Otherwise, we won't make it.
Go to bed early. Or else you won't be able to get up tomorrow.
Take an umbrella. Otherwise, you'll get wet.
Study properly. Otherwise, you'll fail the exam.
You should apologize right now. Otherwise, it might become an even bigger problem.

さもないと connects two sentences where the first states an action or suggestion, and the second warns of a negative consequence if that action is not taken.

Common patterns

さ (so) + (too) + ない (negative) + (conditional)
Literally: "if it's not so."
[imperative/suggestion]。さもないと [negative consequence]。

Forms

  • さもないと: standard form
  • さもなければ: more formal, written style
  • そうでないと: neutral alternative
  • そうしないと: neutral alternative

Similar words

  • でないと: or else (casual)
  • じゃないと: otherwise (casual)

Register

Somewhat literary or dramatic. In everyday casual speech, そうしないと or じゃないと are more common.