Nyuunanshin roughly translated means having a “flexible, pliant, generous spirit.” It’s having an attitude of being open to one’s feelings, environment, and situation, and trying to adapt instead of trying to be like an unmoving, solid block of wood. It’s sort of a contrast to the notion of fudoshin (being immovable, like the implacable god Fudo-Myoo); but fudoshin concerns a spirit of facing adversity. Nyuunanshin is not so much about a combative mind as it is about being able to grasp or accept concepts in a learning environment. It’s not about being a pushover; you do have convictions. But you are flexible enough to look at all sides and then make a conclusion.

~ Wayne Muromoto from, http://classicbudoka.wordpress.com/2012/11/30/nyuunanshin-being-open-to-your-feelings/

ɕ