堅けん忍にん持じ久きゅうMeaningsNoun1. dogged perseverance; untiring patienceKanji used堅firm忍ninja持have久long timeComposed of堅けんstrength; solidity; firmness; armour; armorNoun忍にんendurance; forbearance; patience; self-restraintNoun持じ久きゅうendurance; persistenceNoun