Wider rhymes with:
swider, weider, cider, collider, crider, cryder, divider, frieder, glider, greider, grider, gryder, guider, heider, hider, hyder, insider, kreider, krider, kryder, leider, outsider, provider, rider, ryder, scheider, schmieder, schneider, schnider, schnieder, schnyder, seider, shrider, sider, slider, sneider, snider, snyder, spider, strider, supercollider, swider, weider
Wider sounds like:
wader, waiter, water, waterer, waterway, watery, watry, weather, weider, wetter, wetterau, what're, whether, whitehair, whiter, whitewater, whither, whitrow, whittier, wiater, widder, widower, widuri, wieder, withdraw, withdrew, wither, witherow, withrow, witter, wittwer, witwer, woodrow, wydra