Old English or-

← Proto-Germanic *uz- (inherited)

← Old High German ur- (cognate)

← Old High German ir- (mention)

← Old High German ar- (mention)

← Old High German er- (mention)

← Proto-Indo-European *uss- (derived)

← Proto-Indo-European *uds- (mention)

→ English sure (mention)

→ English or- (derived)

→ English orped (mention)

→ Old English ordal (affix)

→ Old English orlæg (affix)

→ Old English ormæte (affix)