Operetta rhymes with:
alpharetta, beretta, cerreta, lauretta, loretta, accetta, agneta, aleta, alpharetta, ancheta, archuleta, archuletta, areta, aretta, armetta, auletta, barletta, barretta, beretta, betta, brunetta, buzzetta, cappetta, carretta, cassetta, cerreta, ceta, chiappetta, chiavetta, coletta, colletta, coretta, d'genetta, damietta, etta, guzzetta, henrietta, huetta, iretta, jacquetta, jetta, joletta, julietta, keta, lameta, lauretta, lavetta, leneta, leota, leta, loleta, loretta, lunetta, maietta, marchetta, maretta, margareta, marietta, mehta, mistretta, nabretta, netta, nicoletta, noleta, palometa, panetta, pauletta, perretta, petta, pinetta, porretta, profeta, reta, rosetta, simonetta, societa, teta, vendetta, verneta, veta, violeta, violetta, voleta, yetta, zaneta, zazueta
Operetta sounds like:
obert, offered, offord, operate, operated, overate, overdid, overdo, overdue, overeat, overhead, overheard, overheat, overheated, overrate, overrated, override, overrode, overt, overwrite, overwrote