Tabb rhymes with:
stab, tab, ab, bab, babb, cab, colab, crab, crabb, crabbe, dab, drab, fab, flab, gab, glab, grab, grabbe, jab, knab, knabb, krabbe, lab, labbe, mab, macnab, mcnab, mcnabb, nab, nabb, prab, prefab, rab, rabb, sabb, scab, schab, slab, stab, tab
Tabb sounds like:
taaffe, tab, tabby, taboo, taff, taffe, taffy, tafoya, taibi, taipei, tap, tape, tapeie, tapia, tapie, tapp, tappe, taub, taube, tavie, tavy, tb, tebbe, tebeau, tebo, tepe, teva, tevye, thabo, that've, thebeau, they've, thibeau, thief, thobe, tibbie, tibby, tibi, tibia, tiff, tip, tipa, tipo, tipoff, tipp, tippie, tippy, tobe, tobey, tobia, tobie, tobu, toby, toffee, tofu, top, tope, topp, toupee, tov, tovey, tovia, toyobo, tub, tuba, tubb, tubby, tube, tufa, tuff, tufo, tupa, tupy, tv, type, typify, typo