Words That Rhyme With "Coolness" :
2 syllables:
allness, blueness, clueless, drollness, dullness, fewness, foulness, frailness, fullness, fulness, gulas, haleness, Holness, hueless, illness, maleness, newness, paleness, realness, shoeless, shrillness, skewness, smallness, staleness, stillness, tallness, trueness, tunas, viewless, vileness, wellness, wholeness
3 syllables:
genteelness, lagunas, Portunus, unwellness, worthwhileness