Slender rhymes with:
blender, callender, challender, lender, schlender, splendor, bender, blender, brender, brendor, callender, cavender, challender, contender, defender, ender, engender, fender, gender, kender, lender, offender, pender, pretender, render, schlender, sender, skender, spender, splendor, stender, surrender, suspender, tender, transgender, vendor, wender, yender, zehnder, zender
Slender sounds like:
salamander, scalamandre, schlender, selander, sjolander, slander, slanderer