唯一

• Reading: ゆいいつ
• Romaji: yuiitsu
• Kanji breakdown: 唯 (yui) — only, merely; 一 (itsu) — one
• Pronunciation: /jɯ.i.i.tsɯ/

Meaning

Only; sole; unique. Describes something that is one of a kind with no alternatives.

Functions as a no-adjective (唯一の), noun, and adverb. Used to emphasise exclusivity: 唯一の友達 (only friend), 唯一の方法 (the sole method). Carries a strong, definitive tone — it asserts that absolutely nothing else qualifies. Sometimes written as ゆいいつ in hiragana for emphasis.

Examples

1. これが成功への唯一の道だと思う。 I believe this is the only path to success.
2. 彼は私の唯一の理解者だった。 He was the only person who understood me.
3. 唯一の問題は時間が足りないことだ。 The only problem is that there isn't enough time.

Usage Guide

Context: emphasis, description, writing

Tone: definitive

Origin & History

Compound of 唯 (yui, only/merely) and 一 (itsu, one). Both kanji reinforce the concept of singularity — 'only one.' The kanji 唯 contains 口 (mouth) and 隹 (bird), originally meaning a single bird's call.

Cultural Context

Era: Classical

Generation: All ages

Social background: Universal