Hader rhymes with:
haider, ader, blockader, crader, crusader, evader, fader, grader, haider, invader, kader, lader, mader, nader, nadir, rader, raider, sader, schader, schmader, schrader, seder, shader, shrader, snader, spader, srader, stader, strader, swader, trader, vader, wader
Hader sounds like:
hadria, haider, hater, hatter, hattery, hattori, haueter, hauter, hayter, header, headwater, heater, heather, heathrow, heeter, heider, heidiwear, hider, hither, hitter, hodder, hoddur, hooter, hotter, hotwire, huether, hutter, hyder, hydra, hydro