1The attributive form of the classical negative auxiliary ず, attached to a verb's 未然形 stem to mean "not…". Not productive in modern Japanese, but survives in written language and fixed expressions such as 言わざるを得ない (have no choice but to say), 見ざる聞かざる言わざる (see no evil, hear no evil, speak no evil), and やむを得ざる (unavoidable).
この問題については、政府の対応が遅すぎたと言わざるを得ない。
As for this issue, I have to say the government's response was too slow.
三猿の「見ざる聞かざる言わざる」は日光東照宮の彫刻で有名だ。
The three wise monkeys — 'see no evil, hear no evil, speak no evil' — are famous from the carvings at Nikkō Tōshō-gū Shrine.
台風で試合が中止になったのは、やむを得ざる事情だった。
The cancellation of the match due to the typhoon was an unavoidable circumstance.
知らざる者に罪はない、という古い言葉がある。
There's an old saying: those who do not know bear no guilt.