Undercook rhymes with:
overcook, cook, cooke, decook, kirkuk, mccook, overcook, precook, book, brook, brooke, chinook, chook, cook, cooke, create-a-book, crook, crooke, decook, flook, forsook, gobbledygook, gook, hook, hooke, kirkuk, look, mccook, mistook, mook, nook, overcook, overtook, precook, rebook, retook, rook, rooke, schnook, schook, shook, snook, stroock, took, tooke, unbook, undertook, unhook, vanhook, zook
Undercook sounds like:
under-age, underage, undergo, undergoes, undersea, underseas, underuse, undress