Kerst rhymes with:
cursed, kirst, berst, burst, coerced, conversed, cursed, disbursed, dispersed, durst, emersed, first, furst, gerst, guaranty-first, headfirst, hearst, herst, hirst, huerst, hurst, immersed, interfirst, interspersed, kirst, medfirst, merced, nursed, pursed, rehearsed, reimbursed, reversed, submersed, thirst, unrehearsed, unreimbursed, versed, werst, worst, wurst
Kerst sounds like:
kaiseraugst, karst, karstadt, kierscht, kierstead, kirkwood, kirst, kirstie, koreagate, kracht, kragt, krist, krista, kristi, kristie, kristy, krogstad