唯 一(ゆいいつ)

ゆいいつ

noun, no-adjective

only, sole, unique

formaldescriptive

1. only, sole, unique

Being the only one of its kind. Nothing else exists in the same category.

これが唯一(ゆいいつ)の方法(ほうほう)です。

This is the only way.

彼(かれ)は唯一(ゆいいつ)の生存者(せいぞんしゃ)でした。

He was the only survivor.

日本語(にほんご)を話(はな)せるのは、チームの中(なか)で彼女(かのじょ)が唯一(ゆいいつ)です。

She is the only one on the team who can speak Japanese.

唯一(ゆいいつ) emphasizes that something is the only one of its kind, with absolutely no alternatives or equivalents.

Common patterns

唯一(ゆいいつ)の + noun: the only ~ (唯一(ゆいいつ)の方法(ほうほう), the only method)
唯一(ゆいいつ)無二(むに): one and only, absolutely unique
唯一(ゆいいつ)の例外(れいがい): the sole exception

Similar words

たった一(ひと)つ: only one (casual, spoken)
唯一(ゆいいつ): only, sole (formal, written)
独自(どくじ): unique, original (focuses on distinctiveness)
ただ一(ひと)つ: the one and only (literary)

Usage

Functions as both a noun and a no-adjective. More formal and emphatic than たった一(ひと)つ. Common in written language and formal speech.

Related Words

Compare: 独自(どくじ) (unique, original)

Compare: 無二(むに) (unique)

general

Added 2026.1.9 20:57 · Revised 2026.9.2 12:02

01500/01666_yuiitsu