noun, noun which may take the genitive case particle 'no', na-adjective
indomitable; unyielding; persistent
Describes a spirit, will, or attitude that never gives in to hardship. Often used in formal or literary contexts, and in set phrases like 不屈の精神 (indomitable spirit).
His indomitable spirit led the team to victory.
She faces any difficulty with an unyielding will.
He has an indomitable spirit that never gives in to any hardship.
She showed an unyielding will not to be beaten by her illness.
粘り強い is an everyday i-adjective for tenacious, persistent effort, whereas 不屈 is a more formal noun describing a grand, unyielding spirit.
不屈 describes never giving up over a long struggle, while 毅然 describes a firm bearing in a specific moment.
不屈 describes an indomitable spirit that refuses to be broken by hardship, while 不退転 specifically describes resolve that will not retreat from a chosen path.
屈服 means to yield or surrender to pressure, the direct opposite of the unbreakable resolve expressed by 不屈.
不朽 means eternal or immortal (as in lasting fame or work), while 不屈 means unyielding in spirit; the two share the 不 prefix and sound but differ completely in meaning.
Compound of 不 (not) and 屈 (bend, yield). The meaning 'not bending' extends metaphorically to an unyielding spirit.
The players confronted the powerhouse team with an unyielding fighting spirit.