Little words

thank you

Source:dancMiddle High German · “thanks”probable

'I thank' travelled from German to Czech, then to Polish and Ukrainian; Russian says 'God save you', BCS gives 'praise'.

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English

thank you

Polish

dziękuję

dʑɛŋˈkujɛ

CognateSame source — the sound laws connect them.

In all five languages

BCS script

Latin under Cyrillic

Russian
спаси́боspasibo
spɐˈsʲibədifferent word · спаси́ Бог 'God save (you)'
Ukrainian
дя́куюdjakuju
ˈdʲakujuborrowed · Polish (ultimately German)
Polish
dziękuję
dʑɛŋˈkujɛborrowed · Czech (ultimately German)
Czech
děkuji
ˈɟɛkujɪborrowed · Middle High German danc 'thanks'
Colloquially děkuju.
Bosnian-Croatian-Serbian
hvalaхвала
ˈxvaladifferent word · Proto-Slavic *xvala 'praise'
English
thank you
English shares this source: thank — Thank and German Dank are the same Germanic word that Czech borrowed.