Splendor rhymes with:
blender, callender, challender, lender, schlender, slender, bender, blender, brender, brendor, callender, cavender, challender, contender, defender, ender, engender, fender, gender, kender, lender, offender, pender, pretender, render, schlender, sender, skender, slender, spender, stender, surrender, suspender, tender, transgender, vendor, wender, yender, zehnder, zender
Splendor sounds like:
splinter, splintery, supplementary