Whimper rhymes with:
shrimper, simper, bumper, burkemper, camper, damper, distemper, dumper, gamper, hamper, jumper, kamper, kemper, lumper, mumper, pamper, pomper, samper, scamper, shrimper, simper, smokejumper, stamper, stemper, stumper, swamper, tamper, temper, thumper, tremper
Whimper sounds like:
whenever, whomever, winberry, winfree, winfrey