要不然

• Pinyin: yào bù rán
• Hanzi breakdown: 要 = 西 (west) + 女 (woman), meaning want/if; 不 = negation; 然 = 然 meaning so/thus

Meaning

Otherwise; or else. A conjunction introducing an alternative or consequence.

More colloquial than 否则. Often used to warn about consequences or suggest alternatives. Variants: 要不 (shorter, more casual), 不然 (similar meaning). Common pattern: statement + 要不然 + consequence/alternative.

Examples

1. 你得早点出发，要不然会赶不上飞机。 You need to leave early, otherwise you'll miss the flight.
2. 快把伞带上，要不然淋雨就麻烦了。 Take an umbrella quickly, or else getting caught in the rain will be troublesome.
3. 这事你得亲自去处理，要不然别人不放心。 You need to handle this matter personally, otherwise others won't feel at ease.

Usage Guide

Context: everyday, warnings, suggestions

Tone: casual

Do Say

• 快走吧，要不然来不及了。(Let's go quickly, otherwise we'll be late.)
• 要不然我们换个地方？(Or else shall we go somewhere else?)

Don't Say

• 书面正式报告中频繁使用要不然 — 书面语应用'否则'更合适

Origin & History

Compound of 要 (if/want) + 不然 (not so, otherwise). A colloquial way to say 'if not so.'

Cultural Context

Generation: All ages

Social background: Universal