(きそ)

きそう
godan verb
to compete, to vie
1. to compete, to vie, to rival
To strive against others for superiority, a prize, or recognition. Can describe both formal competition and informal rivalry.
(はや)さを(きそ)う。
To compete for speed.
二人(ふたり)成績(せいせき)(きそ)()っている。
The two are competing with each other over grades.
各社(かくしゃ)技術力(ぎじゅつりょく)(きそ)い、新製品(しんせいひん)次々(つぎつぎ)発表(はっぴょう)した。
Each company vied in technical prowess, announcing new products one after another.

GRAMMAR:
Godan verb (五段(ごだん)). The pattern ~を(きそ)う means "to compete in/for ~." The compound form (きそ)()う emphasizes mutual competition.

COMMON COLLOCATIONS:

  • (はや)さを(きそ)う: to compete for speed
  • (うつく)しさを(きそ)う: to vie in beauty
  • (うで)(きそ)う: to compete in skill
  • (きそ)()う: to compete with each other
  • (さき)(きそ)う: to race to be first

SIMILAR WORDS:
競争(きょうそう)する is the more common noun+する form meaning "to compete," used broadly. (きそ)う is a native Japanese verb with a slightly more literary feel, often used when the object of competition is specified (~を(きそ)う).