Sizeable rhymes with:
sizable, advisable, inadvisable, realizable, recognizable, sizable, unrecognizable, advisable, analyzable, disposable, divisible, excusable, exercisable, feasible, fusible, implausible, inadvisable, inexcusable, infeasible, invisible, plausible, realizable, recognizable, reusable, sizable, unfeasible, unrecognizable, unusable, usable, visible
Sizeable sounds like:
sabala, sabel, sabella, sable, sabol, sackville, safely, saffell, saffle, safley, savala, savel, savell, savely, savill, saville, scapula, schabel, schaible, schappell, schauble, scheffel, scheibel, scheible, schiebel, schiphol, schobel, schubel, schwebel, scibelli, scibilia, scovel, scovell, scovil, scovill, scoville, scuffle, seibel, seipel, seiple, seppala, sevilla, seville, shapely, shapley, shappell, shepley, shibley, shipley, shiveley, shively, shivley, shoofly, shopwell, shoval, shovel, shuffle, sibelle, sibil, sibilia, sibilla, sibille, sible, sibley, sibyl, sibyll, siebel, siple, sippel, sipple, sivley, sizable, sobel, sobil, soble, sobol, sociable, soffel, souffle, spall, spalla, spell, spiel, spill, spillway, spoil, spool, squabble, successful, successfully, successively, supple, supplee, supply, svehla, swavely, swivel, sybil, sybilla, sybille