Wackos rhymes with:
sacco's, alco's, amexco's, amoco's, anadarko's, arco's, arcos, armco's, asarco's, avemco's, bakos, barco's, biko's, brcko's, broncos, buttafuoco's, chriboniko's, christakos, cisco's, coleco's, conoco's, conseco's, delbarco's, discos, drakos, echo's, echoes, echos, ensco's, fiascos, francesco's, francisco's, franco's, fresco's, frescoes, geckos, geico's, heico's, inco's, ipalco's, jafco's, kakos, koko's, lilco's, makos, markos, medco's, mikos, nabisco's, neco's, nikko's, niko's, peco's, pepsico's, pinkos, revco's, rico's, ricoh's, rocco's, rokos, roskos, sacco's, seko's, tacos, tedesco's, tenneco's, texaco's, tomako's, tyco's, wainoco's
Wackos sounds like:
w's, w.'s, w.s, waack, waag, waage, waas, wace, wach, wacha, wacho, wachowiak, wachowski, wachs, wack, wacko, wacks, wacky, waco, wag, wag's, waga, wage, wages, wagg, waggy, wags, wagy, wah's, waikiki, wais, wake, wakes, wako, was, wasch, wasco, wash, washes, washi's, washko, washoe, washy, wasik, wasiyu, waskiewicz, wasko, waskow, wass, waszak, waszkiewicz, waugh, waugh's, waukesha, wausau, wax, waxes, waxy, way's, ways, weak, weaks, wease, weck, weech, week, week's, weekes, weeks, weeks', weese, wege, weich, weick, weigh, weighs, weik, weis, weise, weiss, weiss's, weisse, weisz, wes, wesch, wesche, wesco, wess, wessex, whack, whacko, whacks, wheeze, wheezes, which, which's, whig, whigs, whisk, whiskey, whiskeys, whisks, whisky, whiz, whizzes, who's, whoosh, whose, why's, whys, wiacek, wicca, wice, wich, wick, wicke, wickes, wickes's, wickey, wicks, wiech, wieck, wies, wiese, wiess, wig, wigg, wiggs, wigs, wik, wike, wikowsky, wis, wisch, wise, wiseguy, wish, wishes, wishy, wiss, wissa, wisz, wix, wiz, woes, wojciak, wojcicki, wojciech, wojciechowski, wojcik, wojick, wok, woke, woks, woo's, woogie, woos, woozy, wouk, wow's, wows, ws, wu's, wujcik, wuss, wussow, wuxi, wuzzy, wyche, wyk, wyka, wyke, wykes, wyse, wyse's, wysocki, wyss