内 側(うちがわ)

うちがわ

noun

inside; inner side

1. inside; inner side; interior

The part that is within or facing inward.

ドアの内側(うちがわ)に鍵(かぎ)がある。

There is a lock on the inside of the door.

箱(はこ)の内側(うちがわ)を確認(かくにん)してください。

Please check the inside of the box.

カーブでは内側(うちがわ)を走(はし)ると早(はや)い。

Running on the inside of a curve is faster.

内側(うちがわ) refers to the inside, inner surface, or interior of something—the part that faces inward.

COMMON EXPRESSIONS:

内側(うちがわ)から開(あ)ける: to open from the inside
内側(うちがわ)に向(む)く: to face inward
内側(うちがわ)を見(み)る: to look at the inside
内側(うちがわ)に入(はい)る: to go inside

CONTRAST:

内側(うちがわ): inside, inner side
外側(そとがわ): outside, outer side

SIMILAR WORDS:

中(なか): inside, within (more general)
内部(ないぶ): interior (more formal/technical)
裏(うら): back side, reverse side

USAGE:
内側(うちがわ) specifically emphasizes the side or surface facing inward, rather than the space within. Use 中(なか) for referring to the space inside something.

Related Words

Antonym: 外側(そとがわ) (outside, outer side)

Synonym: 内部(ないぶ) (interior (formal))

general

Added 2026.1.16 16:37 · Revised 2026.6.7 0:06

05000/05449_uchigawa