expression
Archaic conditional expression equivalent to modern ~でなければ or ~しないならば. Found in classical Japanese and occasionally in modern formal or literary contexts.
「あらずんば死す」という覚悟で戦った。
They fought with the resolve of 'if not, then death'.
古典では「あらずんば」が条件を表す表現としてよく使われる。
In classical literature, 'あらずんば' is often used as a conditional expression.