Secular rhymes with:
intermolecular, molecular, avuncular, binocular, cardiovascular, circular, curricular, extracurricular, gastrovascular, intermolecular, jocular, molecular, muscular, particular, perpendicular, semicircular, spectacular, testicular, unspectacular, vascular, vehicular, vernacular
Secular sounds like:
sacilor, sackler, sailer, sailor, salary, saller, salyer, sayler, saylor, scalar, scalera, schaller, scheeler, scheler, scheller, schickler, schiller, schisler, schissler, schleyer, schoeller, scholar, scholer, scholler, schooler, schueler, schueller, schuessler, schuler, schuller, schussler, schuyler, schwalier, schwaller, schwegler, scolari, scolaro, sealer, sechler, seckler, segler, seigler, seiler, seller, sellier, sesler, sessler, seyler, seyller, shaler, shallower, shawler, sheckler, sheeler, sheller, shelor, shiller, shisler, shissler, sholar, shular, shuler, sickler, siegler, sieler, sigler, siler, siller, sillier, sisler, sizeler, sizzler, sklar, skoler, slayer, slower, slur, slurry, solar, solari, soler, soleri, soller, solorio, soulier, soulliere, squalor, suhler, syler