Leffingwell rhymes with:
langwell, langwell, baswell, bordwell, boswell, bowell, braswell, burwell, caldwell, carrawell, clewell, cowell, criswell, croswell, dewell, doswell, dowell, fewell, followell, gowell, grewell, griswell, gruwell, hallowell, haswell, hewell, hollowell, hunnewell, hywell, kingswell, langwell, madewell, mowell, norwell, popplewell, prequel, prowell, roswell, shadwell, shewell, showell, sowell, stowell, tewell, towell, trowel, trowell, vowell, wiswell, yowell
Leffingwell sounds like:
levamisole, livingwell, lovingly