English extraterrestrial

← English extra- (affix)

← English terrestrial (affix)

← Proto-Indo-European *ters- (root)

→ English extraterrestrially (suffix)

→ English nonextraterrestrial (prefix)

→ English extraterrestrialness (suffix)

→ English extraterrestrialization (suffix)

→ German extraterrestrisch (cognate)

→ Greek εξωγήινος (calque)