English err

← Old English eorre (cognate)

← Old English ierre (mention)

← Old English iersian (cognate)

← Old English ierre (cognate)

← Middle English erren (inherited)

← Old French errer (derived)

← Proto-Indo-European *h₁ers- (root)

← Proto-Indo-European *h₁ers- (derived)

← Latin errō (derived)

→ English error (link)

→ English inerrable (affix)

→ English errable (suffix)

→ English erration (mention)

→ English erreth (suffix)

→ English errest (suffix)