Astin rhymes with:
tin, adin, akin, allin, allphin, alpin, askin, aslin, aswin, atkin, been, begin, berlin, bihn, bin, binn, blinn, boleyn, bongjin, brin, brinn, bryn, chagrin, chang-hsin, chin, chinh, chinn, din, dinh, eldwin, elkin, emlyn, eskin, fin, finn, finne, flinn, flynn, gin, ginn, glavine, glyn, glynn, grin, guin, guinn, gwin, gwinn, gwyn, gwynn, gwynne, gyn, herein, hinn, in., inn, itkin, jin, kaylynn, kihn, kin, kinn, kinne, kyoung-min, laminne, lin, linh, linn, linne, lwin, lyn, lynn, lynne, mcginn, mcglinn, mcglynn, mcguinn, mclin, mclinn, mcminn, mcquinn, mihn, min, minh, o'flynn, o'guinn, o'quinn, oflynn, oguinn, pin, pinn, prynne, qin, quin, quinn, rhin, rihn, rinn, rinne, schwinn, shin, shinn, sin, sinn, skin, spin, syn, therein, thin, tin, trinh, twin, vanryn, verduin, vin, violin, wherein, win, winn, winne, within, wynn, wynne, yalin, yan-bin, yin, zinn, zlin
Astin sounds like:
academe, academia, academy, accusation, accustom, accutane, acetone, acquisition, acquitaine, actin, action, actodine, acton, agitation, agostini, agostino, agustin, akkadian, aquitaine, ashdown, ashton, assocation, association, asthma, aston, auction, augustin, augustine, augustinian, augustyn, austen, austin, austine, auston, auxton, axtman, axton, azactam