Private; personal — relating to an individual rather than public matters (e.g., 'personal opinion').
それは私的な問題なので、部外者が口出しするべきではない。
That's a private matter, so outsiders shouldn't interfere.
会議で私的な話題は避けた方がいい。
It's better to avoid personal topics during the meeting.
彼女の発言は私的見解に過ぎない。
Her remarks are merely a personal view.