気(き)が合(あ)う

きがあう
expression
to get along well; to hit it off; to be compatible
emotion
1. to get along well; to hit it off; to be compatible
to have a natural affinity or compatibility with someone, sharing similar tastes, interests, or temperament
あの二人(ふたり)は気(き)が合(あ)う。
Those two get along well.
初(はじ)めて会(あ)ったのに、すぐ気(き)が合(あ)った。
Even though we met for the first time, we hit it off right away.
趣味(しゅみ)が同(おな)じだから、彼(かれ)とは気(き)が合(あ)うのかもしれない。
Maybe I get along with him because we have the same hobbies.

An idiomatic expression using 気(き) (spirit, feeling, temperament) and 合(あ)う (to match, to fit). Describes a natural compatibility between people — a sense that personalities, interests, or values align well.

Common patterns

Similar words

  • 馬(うま)が合(あ)う: to hit it off — similar meaning but slightly more casual; literally "the horses match"
  • 相性(あいしょう)がいい: to be compatible — broader, also used for romantic compatibility and object compatibility
  • 気(き)が合(あ)わない: to not get along — the negative form, used when personalities clash

Usage

Typically used with the particle と to indicate the person one gets along with. The subject is often implied rather than stated explicitly.

Related Words

Compare: 相性(あいしょう)がいい (to be compatible)
Related: 意気投合(いきとうごう) (to hit it off, to get along instantly)
Compare: 仲(なか)が良(よ)い (to be on good terms)
Compare: 波長(はちょう) (wavelength)
general
Added 2026.4.8 3:20 · Revised 2026.9.2 13:02
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