Gu rhymes with:
goo, igou, ragu, zungu, abou, abreu, accrue, adieu, ado, aeroperu, anew, askew, babu, badu, baku, ballou, ballyhoo, bamboo, bellew, belyeu, benhamou, beu, bleu, blew, blue, boo, brew, brue, byu, c2, canoe, carilou, cat-2, cebu, chaloux, champoux, chengdu, chew, chiu, choo, chou, chu, clue, cmu, construe, coo, corbu, cou, coup, coutu, crew, crewe, cue, deblois, debut, decou, depew, depue, deux, dew, dfw, do, doo, douwe, drew, drive-thru, dru, du, due, egnew, ensue, eschew, ewe, fauroux, few, fitzhugh, flew, flu, flue, fondue, foo, fourtou, frew, frueh, fu, geroux, gignoux, giroux, glew, glue, gnu, goo, grew, grewe, gue, heroux, herscu, hew, hewe, hitherto, hoo, hou, houx, hsu, hu, hue, hugh, hullabaloo, igou, imbue, into, iou, jammu, jamu, jew, joo, ju, jue, jus, kalamazoo, kangaroo, karatsu, katmandu, kazoo, ketou, kew, khoo, khuu, knew, komatsu, koo, ku, kwangju, kyu, laroux, larue, ledoux, lemieux, leroux, leu, lew, lhommedieu, lieu, liou, liu, long-overdue, loo, lou, louw, loux, lu, lue, m2, mailloux, marcou, marcoux, marrou, mccue, mcgrew, mcgue, mchugh, mcknew, mcnew, meiyuh, mew, misconstrue, moo, mu, n92762, neveu, new, nu, ooh, oooh, ou, outdo, outgrew, overdo, overdue, overthrew, pas-de-deux, perdue, peru, peugh, pew, phew, phu, plew, plue, poo, pooh, pou, prew, pru, prue, prugh, pshew, pu, pugh, purdue, pursue, q, q., qu, que, queue, ragu, ramu, raoux, ratu, redo, renew, reto, review, revue, rew, rhew, rhue, richoux, rioux, roux, ru, rue, schewe, schoo, schou, schue, schuh, screw, seydoux, shampoo, shamu, shew, shiu, shoe, shoo, shu, shue, siew, sioux, skew, slew, soo, spew, stew, strew, stu, stuewe, su, subdue, sue, suu, taboo, tattoo, tatu, tew, thankyou, theroux, thew, threw, through, thru, thuy, tien-fu, tieu, timbuktu, to, tobu, too, toyoo, treu, trew, trieu, troyu, true, true-view, tsu, tu, tue, two, u, u., undo, undue, unglue, untrue, urdu, uwe, vanlue, view, vous, vu, vue, wahoo, wenzhou, whay-yu, whew, who, withdrew, woo, wu, xu, xue, yabbadabbadoo, yew, yoo, you, yu, yue, zanu, zhambu, zhou, zhu, zoo, zue, zungu
Gu sounds like:
g, g's, g., g.'s, g.s, ga, gacek, gach, gacy, gacy's, gae, gaea, gag, gage, gags, gai, gaia, gaige, gajewski, gas, gas's, gasaway, gasca, gase, gaseous, gases, gash, gashes, gasich, gaska, gaskey, gasque, gass, gassaway, gassee, gasses, gau, gauch, gauche, gaucho, gauchos, gauge, gauges, gaugh, gaus, gause, gauss, gauze, gaw, gawk, gawky, gay, gaye, gays, gaz, gaza, gaza's, gazaway, gaze, gazes, geac, geagea, geck, gecko, geckos, gee, gee's, geek, geeks, geeky, gees, geese, geesey, geez, geeze, gegg, geico, geico's, geigy, geigy's, geis, geise, geisha, geiss, gekas, gekko, geo, geschke, gesco, geske, gess, gewgaw, ghee, ghez, ghezzi, ghio, ghose, ghosh, gia's, giacco, gick, gieck, gies, giese, giesecke, gieseke, giesey, gieske, gig, gigi, gigs, gikas, gioia, gish, gisi, gissi, gisu, giza, gizzi, go, goa, gocke, goe, goeas, goecke, goeke, goes, goewey, goga, gogh, goghs, gogo, goh, gokey, goo, gooch, gooey, googe, gook, goos, goose, goosey, gosa, gosch, gose, gosh, gosha, goshawk, goss, gossage, gosse, goswick, gouge, gough, gousha, gow, goy, goya, goya's, goyko, goza, gozo, gozo's, guasch, guay, gucci, guccio, guck, gucwa, gue, guess, guesses, guez, guez's, guice, guise, guises, gus, guse, guses, gush, gushes, gusky, guss, gussie, gussy, guy, guy's, guys, guys', guza, guzek, guzik, guzowski, guzy, guzzi, guzzo, gway, gyi, gyosai