(きそ)()

きそいあう
godan verb
to compete with each other, to vie
1. to compete with each other
To engage in competition with one another, each trying to outperform the other.
二人(ふたり)選手(せんしゅ)(きそ)()っている。
Two athletes are competing against each other.
企業(きぎょう)同士(どうし)(はげ)しく(きそ)()っている。
Companies are fiercely competing with each other.
お互(たが)いに(きそ)()うことで成長(せいちょう)できる。
We can grow by competing with each other.
2. to vie, to rival each other
To strive to surpass each other in achievement or quality.
各社(かくしゃ)品質(ひんしつ)(きそ)()っている。
The companies are vying with each other over quality.
(ふた)つの(みせ)値段(ねだん)(きそ)()う。
Two stores rival each other on price.
世界中(せかいじゅう)研究者(けんきゅうしゃ)(あたら)しい発見(はっけん)(きそ)()っている。
Researchers around the world are vying with each other for new discoveries.

(きそ)()う is an intransitive verb (自動詞(じどうし)) meaning to compete with each other.

COMPOUND STRUCTURE:

  • (きそ)う (to compete) + ()う (each other) → to compete with each other

ASPECT (ている):
(きそ)()っている indicates an ongoing competition.

COMMON PATTERNS:

  • (はげ)しく(きそ)()う (compete fiercely)
  • (たが)いに(きそ)()う (compete with each other)
  • 切磋琢磨(せっさたくま)して(きそ)()う (compete while improving each other)

NUANCE:
Implies mutual competition where both parties are actively trying to outdo each other. Often used in positive contexts where competition leads to improvement.

SIMILAR WORDS:

  • (きそ)う: to compete (not necessarily mutual)
  • 競争(きょうそう)する: to compete (more formal)

[Register: Neutral]