Bummer rhymes with:
brummer, comer, drummer, dumber, dummer, glummer, hummer, kummer, midsummer, nemir, plumber, plummer, somer, sommer, summar, summer
Bummer sounds like:
bahner, banner, baumer, baumhauer, beamer, beaumier, beemer, behmer, behner, behymer, benner, benware, beumer, beymer, binary, binner, boehmer, boehner, bohmer, bohner, bomar, bomer, bommer, bonar, boner, bonier, bonior, bonner, bonnor, bonura, boomer, boomhower, bowmer, buehner, bunner, byner