Words That Rhyme With "Ultimatums" :
2 syllables:
Adas, Akens, atoms, autumn's, bacon's, betas, bottoms, cadence, Clayton's, datas, datum, daytimes, Dayton's, halfpence, items, laitance, patrons, Saipan's, straightens, Tatum, totems
3 syllables:
awakens, cicadas, erratum, pesetas, substratum