不要 (bù yào)
don't!; must not
Character breakdown
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不 (bù) · 4 strokes
Pictograph of sepals of a flower. The modern meaning "no" is a phonetic loan.
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要 (yāo) · 9 strokes
Pictograph of two hands grabbing a woman's (女) waist. The current meaning "want" is a phonetic loan. The original meaning "waist" is now written as 腰.