唯（wei）
Name meaning
唯 (wei) means only, solely, or an answering assent in classical usage. In a given name it should suggest focus, sincerity and a clear center, not isolation or stubborn self-importance.
Practical naming use
Use 唯 (wei) when the name should feel focused, clean and single-minded. It suits study, spiritual practice, writing, design or a personality that values clarity over noise. Because the character can sound narrow, pair it with a warm or ethical character.
Pair 唯 (wei) with a character that gives the focus a humane purpose, such as 唯安 (Weian) Wei'an, 唯诚 (Weicheng), 唯文 (Weiwen) or 唯明 (Weiming). Avoid pairings that make it sound self-centered.
唯安 (Weian): Wei contributes only, focused; An adds peace, safety.
Reference
Analects, Liren
Shuowen explanation cited in character dictionaries
Historical / name-use references
德唯 (Dewei)
Dewei, also recorded as Hongche Dewei, was a Qing Buddhist monk in the DILA Buddhist Authority Database. This gives premodern name-use evidence for 唯 (Wei) as part of a personal or religious name.