excellent adj.

word-forming element, in English meaning usually "out of, from," but also "upwards, completely, deprive of, without," and "former;" from Latin ex "out of, from within; from which time, since; according to; in regard to," from PIE *eghs "out" (source also of Gaulish ex-, Old Irish ess-, Old Church Slavonic izu, Russian iz). In some cases also from Greek cognate ex, ek. PIE *eghs had comparative form *eks-tero and superlative *eks-t(e)r-emo-. Often reduced to e- before -b-, -d-, -g-, consonantal -i-, -l-, -m-, -n-, -v- (as in elude, emerge, evaporate, etc.).

Proto-Indo-European root meaning "to be prominent," also "hill."

It forms all or part of: colonel; colonnade; colophon; column; culminate; culmination; excel; excellence; excellent; excelsior; hill; holm.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit kutam "top, skull;" Latin collis "hill," columna "projecting object," cellere "raise;" Greek kolōnos "hill," kolophōn "summit;" Lithuanian kalnas "mountain," kalnelis "hill," kelti "raise;" Old English hyll "hill," Old Norse hallr "stone," Gothic hallus "rock."

"high rank," c. 1200, from Latin excellentia "superiority, excellence," from excellentem (see excellent); as a title of honor it dates from early 14c.