Lamenting rhymes with:
cementing, fermenting, cementing, circumventing, consenting, denting, dissenting, fermenting, inventing, misrepresenting, presenting, preventing, reinventing, relenting, renting, repenting, representing, resenting, tenting, unrelenting, venting
Lamenting sounds like:
laminating, landing, landings, landmass, landmasses, landmines, landon's, lanting, lanting's, lending, lendings, limitations, limiting, linden's, london's