要不
yào bù · HSK 7
how about...?
要 want + 不 not = want-not: if not this, then... or else / otherwise
要不 chains 要 (want) and 不 (not) to set up an alternative. It means if not that, then this instead — used for or else, otherwise, or to softly float a suggestion: how about...?
要 — west 覀 (top) + woman 女 (bottom)
Originally a pictograph of a woman with hands on her waist, meaning 'waist' (the original form of 腰). The top 覀 is a stylized depiction of the waist area, not the character for 'west'. Over time it was borrowed for the meaning 'to want, important', so 腰 (with 月 flesh radical) was created for the original 'waist' sense.
不 — single pictograph; bird flying upward
Originally a pictograph in oracle bone script, traditionally interpreted as a bird flying up toward the sky and unable to come down, suggesting negation or refusal. Over time it became the standard negation word in Chinese, used before verbs and adjectives to mean 'not'.