要不然 (yào bù rán) means “otherwise; or else; or”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
快走吧,要不然就迟到了。
Kuài zǒu ba, yàobùrán jiù chídào le.
Let's go quickly, otherwise we'll be late.
Updated: 2026-05-27