ざるnot, un-

たゆまざる努力(どりょく)が成功(せいこう)の秘訣(ひけつ)である。

Unwavering effort is the secret to success. {not, un-}

彼(かれ)が不倫(ふりん)していること、妻(つま)には言(い)わざるべきだ。

We should not tell his wife that he is having an affair. {not, un-}

プロジェクトが失敗(しっぱい)した理由(りゆう)は準備(じゅんび)不足(ぶそく)と言(い)わざるを得(え)ない。

The reason the project failed can undoubtedly be attributed to insufficient preparation. {not, un-}

たゆまざる努力(どりょく)のおかげで、彼(かれ)は社長(しゃちょう)として富(とみ)を築(きず)いたというわけだ。

Thanks to his unwavering efforts, it is said that he built his wealth as a president. {not, un-}

受験生(じゅけんせい)の時(とき)にたゆまざる努力(どりょく)をしていたら今頃(いまごろ)あの大学(だいがく)に通(かよ)えていたものを…。

If I had relentlessly worked hard when I was an examinee, by now, I could have been attending that university... {not, un-}