唯 means “only, sole”

ゆい · yui

Also: solely, merely, simply

Kun'yomi (Japanese reading)
ただ
On'yomi (Chinese reading)
ユイ, イ

JLPT N1 · Taught in secondary school · 11 strokes

The story

A mouth (口) beside a bird (隹): picture one bird singing the only song in the forest. 唯 is only: 唯一 means the one and only, and the newborn Buddha is said to have declared 天上天下唯我独尊, "in heaven and earth, I alone am honored".

Used in 唯一 (yuiitsu, the one and only), 唯物論 (yuibutsuron, materialism), and 唯我独尊 (yuigadokuson, self-importance)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.