Defining rhymes with:
redefining, redefining, affining, confining, fining, redefining, refining, affining, aligning, assigning, breining, brining, combining, confining, declining, designing, dining, divining, fining, lining, mining, opining, pining, realigning, reassigning, reclining, redefining, redesigning, refining, resigning, shining, signing, twining, vanhyning, vining, whining, wining
Defining sounds like:
dabbing, daphne's, daphnis, dauphinais, davanzo, davinci, deafening, deafness, debonis, debunk, debunks, deepening, deepens, defence, defense, defense's, defenses, defiance, defines, defying, devens, deviance, deviancy, devinci, devinci's, devins, diaphanous, difonzo, dipping, divens, diving, divining, dobbins, dobyns, doffing, dubbing, dubinsky