不屈の精神 is one of several versions or ways to write “Indomitable Spirit” in Japanese.

This one is the famous “Fukutsu no Seishin” phrase.

氣魄 is a Chinese word that means “positive attitude.”

This can also be translated as spirit, boldness, positive outlook, or imposing attitude.

The first Kanji alone means to wash, bathe, primness, cleanse or purify.

The second Kanji means heart, mind, soul, or essence.

Together, these two Kanji create a word defined as “purified spirit” or “enlightened attitude” within Japanese martial arts.

洗心 is one of the five spirits of the warrior (budo) and is often used as a Japanese martial arts tenet. Under that context, it's often defined as a spirit that protects and harmonizes the universe. Senshin is a spirit of compassion that embraces and serves all humanity and whose function is to reconcile discord in the world. It holds all life to be sacred. It is the Buddha mind.

This title will only be familiar to Japanese who practice certain martial arts. Others may not recognize this word at all.

洗心 does not show up as a word in too many Chinese dictionaries, but it can be read and has the same meaning in Chinese.

There is an issue with the first character. The original, and probably most correct version is shown above. However, many dojo documents and other sources have used a more simple first character. Arguments ensue about which version is correct. If you want to be correct in the Japanese language, use the "Select and Customize" button above. If you want to match the Kanji used by your dojo, click the Kanji shown to the right. There is a slightly different meaning with this first character which means before, ahead, previous, future, precedence.