Proto-Slavic *ščirъ

→ Belarusian шчыры (inherited)

→ Bulgarian щир (inherited)

→ Czech čirý (inherited)

→ Macedonian штир (inherited)

→ Polish szczery (inherited)

→ Polish szczyr (inherited)

→ Romanian știr (derived)

→ Russian щирый (inherited)

→ Serbo-Croatian štir (inherited)

→ Slovene ščir (inherited)

→ Ukrainian щирий (inherited)

→ Old Polish szczyry (inherited)