Clean; hygienic; sanitary — free from dirt or contamination.
手を清潔に保つためにこまめに石鹸で洗ってください。
Wash your hands with soap frequently to keep them clean.
この病院は設備が整っていてとても清潔だ。
This hospital is well-equipped and very clean.
清潔な環境で料理を作ることは大切だ。
It's important to prepare food in a clean environment.
Pure; virtuous; immaculate — morally clean or chaste in character or behavior.
彼女は言動が慎ましく、清潔な印象を与える。
Her conduct is modest and gives a pure/clean impression.
清潔な心で人に接することが大事だ。
It's important to treat people with a pure heart.