Refrain rhymes with:
defrain, defrain, dufrane, frain, fraine, frane, frayn, frayne, frein, freyne
Refrain sounds like:
raborn, rabourn, raburn, raeburn, rayborn, raybourn, rayburn, reaffirm, reborn, reform, reforma, repairman, repairmen, reveron, reyburn, ribavirin, ryburn