Constellation's rhymes with:
constellations, constellations, constellations, installations, constellations, installations, constellations, installations, mutilations, accumulations, appellations, calculations, cancellations, circulations, compilations, congratulations, consolations, constellations, correlations, inoculations, installations, manipulations, miscalculations, mutilations, oscillations, ovulations, populations, regulations, revelations, speculations, stipulations, strangulations, tabulations, tribulations, violations