Czech čirý

← Belarusian шчыры (cognate)

← Proto-Indo-European *(s)kei̯ro- (inherited)

← Polish szczery (cognate)

← Russian щи́рый (cognate)

← Slovak číry (cognate)

← Proto-Slavic *ščirъ (inherited)

← Ukrainian щи́рий (cognate)

→ Polish szczery (cognate)