Niagara's rhymes with:
conagra's, conagra's, gingras, admira's, aguirra's, alessandra's, andoras, angoras, artra's, asmaras, astra's, barras, basara's, berra's, booras, borras, buras, calaveras, camera's, cara's, cara'veras, caras, carras, chitra's, clara's, cleopatra's, cobras, conagra's, contras, contras', cora's, deidre's, era's, eras, extras, fidora's, garroz, genres, gingras, guevara's, harrah's, hydras, ira's, iras, jura's, juras, karas, karras, kashiwahara's, kuras, laura's, lira's, lueras, maras, matra's, maura's, mcnamara's, menorah's, menorahs, nomura's, nora's, o'hara's, ohara's, opera's, operas, oprah's, orchestra's, orchestras, pandora's, pantera's, parras, perras, petras, pietras, safra's, sankara's, sara's, sarah's, saundra's, serra's, sierra's, sierras, sinatra's, spectra's, stora's, tara's, taras, terra's, tiaras, ultra's, veras, zebras
Niagara's sounds like:
nagorski, naysayers, nazer's, necrosis, negroes, negros, neikirk, new-jersey, new-jersey's, newkirk, newswires, nicaragua, nicaragua's, nigeria's, nigger's, niggers, nigris, nongreek, nosair's, nucor's