Time & numbers

Thursday

Source:*četvьrtъProto-Slavic · “fourth”certain

The 'fourth' day. *vьr gives ер in East Slavic, ar in Polish, and syllabic r in Czech and BCS.

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English

Thursday

Polish

czwartek

ˈtʂfartɛk

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In all five languages

BCS script

Latin under Cyrillic

Russian
четве́ргčetverg
tɕɪtˈvʲerkinherited
Russian -г is an old East Slavic suffix.
Ukrainian
четве́рčetver
tʃɛtˈʋɛrinherited
Polish
czwartek
ˈtʂfartɛkinherited
Czech
čtvrtek
ˈtʃtvr̩tɛkinherited
Bosnian-Croatian-Serbian
četvrtakчетвртак
ˈtʃetvr̩takinherited
English
Thursday