Scourging rhymes with:
converging, diverging, emerging, merging, purging, resurging, splurging, surging, urging, verging
Scourging sounds like:
saracens, scorching, screeching, scroggins, searching, seriousness, sharking, shearson's, shirking, shrieking, shrugging, sourcing, surgeon's, surgeons, surgeons', surging