Assessing rhymes with:
reassessing, obsessing, reassessing, recessing, acquiescing, addressing, blaesing, blessing, caressing, coalescing, compressing, confessing, depressing, digressing, distressing, dressing, expressing, guessing, hessing, impressing, lessing, messing, obsessing, oppressing, possessing, pressing, professing, progressing, reassessing, recessing, redressing, repressing, stressing, suppressing, transgressing
Assessing sounds like:
accessing, accusing, acheson's, achesons, aching, acme's, acquiescence, acquiescing, agamemnon's, agans, agence, agencies, agencies', agency, agency's, aging, agins, agnes, agnico, agnos, agnosio, agonies, agonize, agonizes, aguanga, aguinaga, aikens, aikins, akens, akins, aquinas, aquino's, ascencio, asencio, ashkenazi, ashkenazis, asians, askance, askin's, asking, askins, asmus, assassin's, assassins, assigning, assigns, assumes, assuming, ausmus, awakening, awakens, axioms, axons, azcuenaga