さにあらず

Meanings

not so; that is not the case

usually written using kana alone

A classical or formal expression meaning 'it is not so' or 'that is not the case'. Often used to deny a preceding statement or assumption. In modern Japanese, it appears mainly in literary or rhetorical contexts.

彼かれの言いうことはさにあらず、真しん実じつは別べつにある。
What he says is not so; the truth lies elsewhere.
世せ間けんの評ひょう判ばんはさにあらず、彼かれは実じっ直ちょくな人じん物ぶつだ。
Contrary to public opinion, he is an honest person.