Colonia rhymes with:
adonia, amazonia, ansonia, antonia, caledonia, cydonia, diaphonia, donia, estonia, gastonia, gonia, harmonia, idonia, latonia, macedonia, madonia, new-caledonia, omonia, patagonia, petronia, philharmonia, rondonia, sidonia, sinfonia, slavonia, slovonia, sophronia, tonia, vernonia, vidonia
Colonia sounds like:
cahalan, calahan, calame, calamia, calamine, calan, calhoon, calhoun, callaham, callahan, callan, callanan, callen, callihan, callinan, callum, calm, calma, calnan, calny, calumny, casalino, caslin, casselman, caughlin, caylin, celani, celano, celena, celene, celimene, celina, celine, cellini, celona, ceylon, chelan, chilean, chillemi, chisholm, chisolm, ciolino, claim, clam, clamen, clammy, clan, clanin, clayman, clean, clem, clemen, clemmie, clemmy, clemo, clenney, clim, cline, clini, clone, cloonan, clooney, clown, clowney, clum, clune, cluny, clymene, clyne, cocklin, coghlan, cogliano, colaianni, colan, coleen, coleman, colen, colin, colina, coline, colino, colleen, collen, collin, collman, collom, collum, colm, colman, coloma, colon, colonna, colony, column, coolman, coughlan, coughlin, coulon, cozzolino, culhane, cullan, cullen, cullin, cullinan, cullinane, cullman, cullom, cullum, cyclone