唯一 (Yuiitsu) is a Japanese adjectival noun meaning “only, sole, unique”.
Meanings
- adjectival noun, noun, adverbonly; sole; unique
Examples
初めの一歩が唯一の難関。
The first step is the hardest.
それは唯一の関心事です。
That's my sole concern.
彼女は私の唯一の友達です。
She is the only friend I have.
Sentences from Tatoeba (CC BY 2.0 FR).