Unread rhymes with:
bread, bred, dread, dred, dredd, fread, fred, freda, interbred, purebred, read, reade, red, redd, retread, shred, spread, thoroughbred, thread, tread, widespread
Unread sounds like:
unearth, unearthed, unenumerated, unheard, unhurried, unhurt, unmarried, unrated, unrath, unworried, unworthy