Noninterest rhymes with:
interest, interest, buttressed, interest, psychiatrist, aquarist, armbrust, barest, buttressed, dearest, deforest, direst, embarrassed, florist, forest, forrest, guitarist, interest, jurist, laforest, merest, nearest, pendergrast, psychiatrist, purest, rainforest, rarest, reforest, severest, terraced, tourist
Noninterest sounds like:
nethercutt, networked, nondirect, nutrasweet