Little words

no

Source:*neProto-Slavic · “not”probable

Ukrainian ні is usually linked with *ni 'nor', though some see in it a lengthened *ne.

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English

Polish

nie

ɲɛ

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In all five languages

BCS script

Latin under Cyrillic

Russian
нетnet
nʲetinherited
From не есть 'is not'.
Ukrainian
ніni
nʲidifferent word · Proto-Slavic *ni 'nor' (as in ні... ні 'neither... nor')
Polish
nie
ɲɛinherited
The same word as 'not'.
Czech
ne
nɛinherited
Bosnian-Croatian-Serbian
neне
neinherited
English
no