Knobs rhymes with:
snobs, blobs, bob's, cobbs, cobs, dobbs, fobbs, globs, gobs, hobbs, hobs, job's, jobs, jobs', kobs, laabs, lobs, mob's, mobbs, mobs, punjab's, raab's, rob's, robb's, robbs, robs, saab's, schwab's, slobs, snobs, sobs, swabs
Knobs sounds like:
kamp's, kamphaus, kamps, kemp's, kempke, kempski, kenefick, kennebeck, kimwipes, knapik, knapke, knapp's, knapsack, knaves, knbc, kneafsey, knives, konopka, kosanovich, kosnovsky, kosnovsky's, koznovsky, koznovsky's