Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Germanic *uber Proto-West Germanic *obar Old English ofer Middle English over English over Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-West Germanic *-līk Old English -līċ Middle English -ly English -ly English overly From over + -ly (adjectival suffix).