Gradel rhymes with:
astraddle, radel, straddle, addle, astraddle, caddell, chadel, fadel, kadel, madel, madl, paddle, radel, saddle, schadel, shadel, stadel, straddle
Gradel sounds like:
gardella, gartley, girdle, girdley, gordillo, gradual, gradually, grathwohl, greatly, gredel, greedily, gretal, gretel, grethel, gridley, guardedly, guardiola