ないnonexistent; not being (there); unowned; not had; unpossessed; unique; not; impossible; won't happen; to not be; …
I-adjective
なければif (it) doesn't exist; if there is no ...; if (one) doesn't have ...; if not ...; unless ...; have to ...; must ...
Expression
なければならないhave to do; must; should; ought to
Expression
なければなるまいought to (verb); should (verb)
Expression