Humbug rhymes with:
firebug, jitterbug, ladybug, abzug, earplug, firebug, jitterbug, ladybug, superdrug, tanjug
Humbug sounds like:
hanback, heimbach, heimbuch, heinbach, heinbaugh, henpeck, himebaugh, hinebaugh, homeboys, homophobic, honeybees, humpback, humvee's, humvees