要不然

yàobùrán
  1. otherwise
  2. or else
  3. or

CEDICT

Entry Composition

1 要不 yàobù
  1. otherwise
  2. or else
  3. how about...?
  4. either... (or...)
2 然 rán
  1. correct
  2. right
  3. so
  4. thus
  5. like this
  6. -ly