Origin: 1425–75; late ME < LL splendōrifer brightness-bearing (see splendor, -fer, -ous; loss of -or prob. by shift of stress, syncope, and dissimilation) + -ous
splen·dif·er·ous (splěn-dĭf'ər-əs) adj. Splendid: "The working genius of American design has been . . . a refining of utilitarian purity into a kind of splendiferous native simplicity"(Jay Cocks).
[Middle English, from Medieval Latin splendiferus, from Late Latin splendōrifer : Latin splendor, splendor; see splendor + Latin -fer, -fer.]
considered a playful elaboration since its re-birth in 1843, but it was a perfectly good 15c. word, from M.L. splendorifer, from splendor (see splendor) + ferre "to bear" (see infer).