Supplemented rhymes with:
implemented, implemented, documented, implemented, documented, implemented, documented, implemented, oriented, accounted, anointed, appointed, augmented, blunted, cemented, commented, confronted, contented, counted, documented, experimented, fermented, granted, haunted, hinted, hunted, implemented, invented, jointed, misprinted, mounted, oriented, painted, patented, planted, pointed, presented, printed, ranted, rented, repainted, represented, resented, slanted, supplanted, talented, wanted
Supplemented sounds like:
splendid, splint, supplant, supplanted, supplement, swoveland