Dutch onderzoeken

← German untersuchen (cognate)

← Middle Dutch ondersoeken (inherited)

← English underseek (cognate)

← Dutch onder- (affix)

← Dutch zoeken (affix)

← Dutch onderzoek (link)

→ English underseek (cognate)

→ German untersuchen (cognate)

→ Dutch onderzoeker (suffix)

→ Dutch onderzoekster (suffix)