Underuse rhymes with:
overuse, accuse, amuse, bemuse, bocuse, buse, chuse, confuse, cues, defuse, ewes, fuse, guse, hewes, hews, hues, hughes, hughes', hughs, huse, infuse, kuse, kuze, meuse, mewes, misuse, muse, overuse, pews, pugh's, pughs, q's, q.'s, q.s, ques, queues, recuse, refuse, review's, reviews, revues, skewes, skews, spews, suffuse, theus, transfuse, u's, u.'s, u.s, views, yew's, yoos, yu's
Underuse sounds like:
under-age, underage, undercook, undergo, undergoes, undersea, underseas, undress