Neat, clean, and modest in appearance; simple, tasteful, and not flashy—often used to describe someone's look or demeanor.
彼女はいつも清楚な服装で出社する。
She always comes to work dressed neatly and modestly.
清楚な印象を与えるために、派手な化粧は避けた。
I avoided flashy makeup to give a clean, modest impression.
清楚で落ち着いた声で挨拶をした。
She greeted us in a calm, neat voice.