Exerciser rhymes with:
evilsizer, evilsizor, hulsizer, plasticizer, synthesizer, advertiser, agrivisor, analyzer, anheuser, appetizer, atomizer, cafetizer, colonizer, compromiser, demonizer, energizer, equalizer, evilsizer, evilsizor, fertilizer, franchiser, hulsizer, ionizer, ironizer, itemizer, lighthizer, merchandiser, mobilizer, moisturizer, nebulizer, organizer, oxidizer, plasticizer, polarizer, popularizer, rittereiser, stabilizer, sterilizer, supervisor, sympathizer, synthesizer, tranquilizer, wickizer, womanizer