Fonder rhymes with:
alexandre, blonder, bronder, conder, condor, donder, gonder, mondor, navin-chandr, onder, ponder, responder, squander, swander, transponder, vonder, wander, yonder
Fonder sounds like:
fainter, fantroy, fauntroy, fender, fenter, finder, fondiaria, founder, foundry, fumidor, funder, fundora