Devotion Diligence Vigorous Energetic in Chinese / Japanese...

精進 is a wide-ranging word that is used in Chinese, Japanese, and Korean.

It can mean devotion, diligence, concentration, aggressive, enterprising, vigorous, energetic, purification, pushing, asceticism, assiduity, or virility. 精進 is deep, and these two characters can express ideas that take a full English phrase to describe, such as “concentration of mind,” “to forge ahead vigorously,” or “to dedicate oneself to progress.”

Used in the context of Buddhism, it means “making earnest efforts to cultivate virtue and get rid of evil” or “zeal in one's quest for enlightenment.”