Here's what rhymes with letteracy.
inveteracy Words that almost rhyme with letteracy
confederacy generally generously decorously electorally lecherously regeneracy preferably degeneracy federally reverently temporally effortlessly measurably treacherously memorably pleasurably ephemerally separately desperately irreparably irreverently separably inexorably adventurously venturesomely inseparably architecturally commensurately intemperately obstreperously incommensurately