Documenting rhymes with:
supplementing, fragmenting, supplementing, fragmenting, frequenting, parenting, patenting, supplementing, accenting, accounting, affronting, amounting, appointing, augmenting, blunting, bunting, cementing, chanting, circumventing, commenting, complementing, complimenting, confronting, consenting, counting, daunting, decanting, denting, disappointing, discounting, disorienting, dissenting, enchanting, experimenting, fainting, fermenting, fingerpointing, fingerprinting, flaunting, fomenting, fragmenting, frequenting, fronting, glinting, granting, grunting, haunting, hinting, hunting, implanting, implementing, imprinting, inventing, lamenting, lanting, minting, misrepresenting, mounting, painting, panting, parenting, patenting, pinpointing, planting, pointing, presenting, preventing, printing, ranting, recanting, recounting, reinventing, relenting, renting, repainting, repenting, replanting, representing, reprinting, resenting, shunting, slanting, sprinting, squinting, supplanting, supplementing, surmounting, tainting, taunting, tenting, tormenting, transplanting, unrelenting, unstinting, venting, wanting
Documenting sounds like:
decanting, decimating, descending, designating, designations, discontinuance, discontinuing, discounting, disseminating, dissenting