Unwieldy rhymes with:
aldi, arnoldi, arnoldy, baldi, bartholdy, bertoldi, capaldi, castaldi, cataldi, dildy, elizalde, fittipaldi, garibaldi, geraldi, gesualdi, giroldi, goldey, goldie, goldy, grimaldi, hildie, hildy, huldy, kildee, moldy, mouldy, oldie, rinaldi, schiraldi, sinibaldi, ugalde, vivaldi, waldie, weldy, wildey
Unwieldy sounds like:
unalloyed, unhealthy, unleaded, unload, unloaded