noun
tenacity of weeds; stubbornness of weeds
Refers to the resilient, persistent spirit likened to weeds that grow back no matter how many times they are cut down. Often used in sports or self-help contexts.
彼の雑草魂が、チームを勝利に導いた。
His weed-like tenacity led the team to victory.
noun, noun which may take the genitive case particle 'no'
die-hard spirit
Colloquial extension emphasizing an unyielding, never-give-up attitude. Often used as a compliment for someone who perseveres against odds.
あの選手はまさに雑草魂だ。
That player truly has a die-hard spirit.
雑草魂で最後まであきらめなかった。
With a die-hard spirit, I didn't give up until the very end.
不屈 means indomitable or unyielding, often used in formal contexts. 雑草魂 is more colloquial and vivid, emphasizing resilience through the weed metaphor.
Compound of 雑草 (weed) and 魂 (spirit, soul). The expression gained popularity through sports commentary, notably associated with baseball player Ichiro Suzuki, who described his tenacious playing style as having a 'weed spirit'.