3 Old HSK word(s): 
☊要不 ** C ☊要不然 ** C ☊要不是 ** C
Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.
要 necessary, essential / necessity
不 no, not / un- / negative prefix
是 indeed, yes, right / to be / demonstrative pronoun, this, that
Hsk Characters:
HSK -Characters and beyond:
| Gb | Big5 | Eng | Rad | Mega | Triple | Multilingual |
|---|
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andernfalls, anderenfalls, andererseits, ansonsteno. : oder, od. : oder [yao4 bu4] 
要不
andernfalls, anderenfallso. : oder, od. : oder [yao4 bu4 ran2] 要不然
falls es nicht [yao4 bu5 shi4] 要不是
Requisit (S) [fei1 yao4 bu5 ke3] 非要不可
unerträglich [yao4 bu5 de5] 要不得
