Gettin' rhymes with:
bitten, bitton, britain, briton, brittain, brittan, britten, britton, ditton, fitton, gritton, kitten, leviton, litten, litton, lytton, mittan, mitten, mitton, overwritten, rewritten, ryton, sittin', sitton, smitten, titone, unwritten, whiton, whitten, whitton, witten, witton, written
Gettin' sounds like:
gaddum, gaetano, gaitan, gastineau, gaston, gastonia, gathman, gatien, gatten, gatton, gaudin, gaudino, gautney, gayden, gaytan, gayton, gedeon, gedney, geodyne, gestation, getman, gettman, gideon, gidney, gitana, gitano, goddam, goddamn, godden, godin, godina, godine, godino, godman, godown, godwin, goeden, gooden, goodenow, goodin, goodine, goodman, goodnow, goodwin, goodwine, goodwyn, gosdin, gotham, gotten, gottman, gudino, guidone, gustin, guston, gutman, gutmann, guttman, guttmann, gutwein, guyton, gyohten