A (沒) 没 mei2 
not have/ there is not/ not 
hat nicht, nicht A (沒有) 没有 mei2you3
not have/ there is not/ not
nicht haben A (不) 不 bu4
not/ no
nicht,nein B (無) 无 wu2
not have/ there is not/ not
1. ohne, nichts, nicht vorhanden sein 2. nicht B (不必) 不必 bu2bi4
need not/ not have to
braucht nicht, nicht müssen
Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.
不 不 no, not / un- / negative prefix
必 必 surely, most certainly / must
from CC-CEDICT under a Creative Commons Attribution-Share Alike 3.0 License
A (不) 不 bu4 not/ no nicht,nein B (無) 无 wu2
not have/ there is not/ not
1. ohne, nichts, nicht vorhanden sein 2. nicht B (不必) 不必 bu2bi4
need not/ not have to
braucht nicht, nicht müssen
Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.
不 不 no, not / un- / negative prefix
必 必 surely, most certainly / must
from CC-CEDICT under a Creative Commons Attribution-Share Alike 3.0 License
B (不必) 不必 bu2bi4 need not/ not have to braucht nicht, nicht müssen Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.
不 不 no, not / un- / negative prefix 必 必 surely, most certainly / must from CC-CEDICT under a Creative Commons Attribution-Share Alike 3.0 License