Proto-Indo-European *wóyde

→ Old English witan (inherited)

→ Czech vědět (inherited)

→ Old Church Slavonic вѣдѣти (derived)

→ Danish vide (inherited)

→ German wissen (derived)

→ Lower Sorbian wěźeś (inherited)

→ Middle Dutch weten (inherited)

→ Old High German wizzan (inherited)

→ Ancient Greek οἶδα (inherited)

→ Dutch weten (inherited)

→ Old Norse vita (derived)

→ Old Dutch witan (inherited)

→ Old Saxon witan (inherited)

→ Polish wiedzieć (mention)

→ Russian ведь (mention)

→ Russian ведать (derived)

→ Serbo-Croatian vedeti (derived)

→ Slovak vedieť (derived)

→ Slovene vedeti (inherited)

→ Old Armenian գիտեմ (inherited)

→ Old Czech věděti (inherited)