ガッツgattsu

1. nounguts
   私にはガッツとやる気きがあります。↗

   I'm a person with guts and a strong will.

• Synonym根性こんじょうNeutralCovers grit and perseverance but also one's basic nature, as in 「根性が悪い」; stresses sticking it out, while 「ガッツ」 is more colloquial with a hot-blooded ring.
• Synonym気概きがいWrittenWritten word for an unyielding spirit in the face of hardship, as in 「気概を示す」; 「ガッツ」 leans toward drive and is more colloquial.
• Synonym気骨きこつWrittenFormal word for the backbone to hold to one's convictions, as in 「気骨のある人」; stresses principle, while 「ガッツ」 stresses drive.
• Synonym度胸どきょうNeutralNerve that keeps you from losing your cool, as in 「度胸がある」; stresses staying calm in the moment, while 「ガッツ」 stresses persistence.
• Synonym胆力たんりょくWrittenFormal and little-used word for nerve that does not flinch when it counts; 「ガッツ」 stresses grit and fighting spirit.
• Synonymど根性どこんじょうCasualColloquial for a never-give-up will even in the toughest spot, stronger in tone than 「根性」, as in 「ど根性大根」.
• Related気骨きこつWrittenFormal word for the backbone to hold to one's convictions, as in 「気骨のある人」; stresses principle, while 「ガッツ」 stresses drive.
• Related意気いきNeutralThe spirit of taking things on positively, as in 「意気込み」 and 「意気投合」; stresses high spirits, while 「ガッツ」 stresses grit.
• Related肝っ玉きもったまCasualColloquial word for pluck and boldness, as in 「肝っ玉母さん」; stresses daring, while 「ガッツ」 stresses drive.
• Related肝玉きもだまCasualA rarer way of saying 「肝っ玉」 for guts; in everyday speech 「肝っ玉」 or 「度胸」 is the usual choice.
• Related荒肝あらぎもNeutralMostly limited to 「荒肝を抜く」, to scare someone stiff; narrow in use, unlike 「ガッツ」, which can praise a person on its own.
• Related胆気たんきWrittenFormal, little-used word for courage that faces difficulty unafraid; it lacks the gritty-drive nuance of 「ガッツ」.
• Antonym弱気よわきNeutralAntonym: lacking confidence and taking a passive stance; also a bearish call in the market. Opposite of the driven 「ガッツ」 in spirit.

The loanword 「ガッツ」 is about drive and fighting spirit, as in 「ガッツポーズ」 and 「ガッツがある」. For perseverance say 「根性」, for nerve under pressure 「度胸」, and for moral backbone 「気骨」; the opposite attitude is 「弱気」. The other words are rarer or tied to a set phrase or register.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 気力きりょく。根性こんじょう。