Tonga rhymes with:
aguanga, aguanga, chimurenga, cowabunga, kumaratunga, aga, aguanga, aguinaga, alvarenga, amiga, andringa, arciniega, arechiga, arriaga, arteaga, astorga, azcarraga, azcuenaga, baldyga, baloga, barga, barriga, beluga, bencivenga, berlanga, binga, bodega, braga, bruegge, bubinga, buga, burciaga, canoga, chattanooga, chattanuga, cheektowaga, chimurenga, ciga, colunga, conestoga, conga, cossiga, cowabunga, cuyahoga, darga, delavega, digga, elzinga, escarcega, falanga, fraga, fukunaga, garriga, goga, grega, haga, hayenga, hedwiga, helga, higa, huallaga, huizenga, huizinga, inga, iniga, iomega, janiga, jirga, kasinga, kganakga, koga, konaga, kowabunga, kulaga, kumaratunga, lechuga, lizarraga, ludwiga, machuga, madruga, malaga, malanga, manga, marga, matranga, matsunaga, mayorga, mega, mennenga, miazga, mississauga, moga, moraga, morga, muranaga, nanninga, nobrega, nobriga, noga, noreiga, noriega, olga, omega, onondaga, ortega, ouaga, ozga, paniagua, parga, puga, quiroga, rega, reynaga, riga, rutabaga, saga, salonga, saratoga, seaga, sega, seliga, sevruga, shakunaga, shimoga, silga, sluga, solchaga, stanga, stegenga, stoga, suniga, szeliga, talaga, talladega, tamminga, ticonderoga, toga, tokunaga, topanga, uranga, valborga, varga, vega, veiga, verga, virga, volga, waga, warga, wierenga, yoga, zagha, zamboanga, zinga, zubillaga, zuluaga, zuniga
Tonga sounds like:
t'ang, taing, taiwan's, taiwanese, tamas, tames, tamez, taming, tamke, tamminga, tanaka, taneja, tang, tange, tango, tangos, tangqui, tangs, tanguay, taniguchi, tanis, tanjug, tank, tank's, tanke, tanks, tanning, tans, tansey, tanski, tansy, tanzi, tattooing, team's, teaming, teams, teams', teaneck, teeing, teeming, teems, teenage, teens, teensy, teething, temco, ten's, tenacious, tenancy, tench, tencza, teneyck, teng, tengiz, tenneco, tenneco's, tennessee, tennessee's, tennis, tennis's, tens, tense, tenuous, tetanus, tetons, teutonic, thames, thang, thank, thank's, thanks, thankyou, thanos, thawing, themes, theming, thence, thing, thing's, things, things', thingy, think, think's, thinks, thinnes, thinness, thinning, thins, thoennes, thomas, thomas', thomas's, thomasas, thomases, thomes, thoms, thong, thunk, thwing, tiding, tidings, tieing, tim's, time's, times, times', times's, timewise, timex, timing, timko, timmins, timmons, timms, tims, tina's, tinch, tines, ting, tinge, tingey, tinkey, tinoco, tins, titanic, titans, tithing, titinus, toeing, toenjes, tom's, tomahawk, tomahawks, tomako, tomako's, tomanek, tomas, tomasek, tomasi, tomasic, tomasik, tomasko, tomaso, tomassi, tomasso, tomaszewski, tomayko, tomczak, tomczyk, tomek, tomes, tomich, tomiichi, tomkiewicz, tomko, tommy's, toms, tomshich, tomsic, tonegawa, tones, tong, tonga's, tonge, tongs, tongue, tongues, tonic, tonics, toning, tonjes, tonk, tonka, tonka's, tonks, tonnage, tonnages, tonnes, tons, tony's, tonya's, tonyes, tonys, tonysk, totems, toting, totino's, touting, towing, town's, townes, townhouse, townhouses, towns, toying, tuitions, tumazos, tummies, tums, tums', tunas, tunes, tung, tung's, tunic, tunica, tunica's, tunick, tuning, tunis, tunisia, tunks, tunku, twain's, twang, twangy, twinge, twining, twinkie, twinkies, twins, twins', tydings, tying, tyminski, tynes