Blockades rhymes with:
arcades, brocades, cascade's, cascades, cascades', decades, kincaid's, ades, aid's, aide's, aides, aides', aids, arcades, blades, blaydes, braids, brigades, brocades, cascade's, cascades, cascades', charades, conrades, crusades, decades, degrades, downgrades, evades, fades, fayed's, glades, grades, grenades, invades, jades, kincaid's, maid's, maids, maids', mcdade's, palisades, parades, persuades, pervades, promenades, raids, shades, spades, suedes, tirades, trade's, trades, upgrades, wade's, wades
Blockades sounds like:
ballasts, ballistic, ballistics, bellsouth's, biologists, blackouts, blackstock, blasts, blockheads, bulkheads