Blackouts rhymes with:
breakouts, checkouts, cookouts, knockouts, lockouts, stakeouts, strikeouts, walkouts, workouts, bailouts, blowouts, breakouts, brownouts, buyouts, checkouts, cookouts, cutouts, dropouts, dugouts, eelpouts, fallouts, handouts, hangouts, hereabouts, hideouts, holdouts, knockouts, layouts, lockouts, payouts, printouts, pullouts, sellouts, stakeouts, standouts, strikeouts, tryouts, turnouts, walkouts, washouts, whereabouts, workouts
Blackouts sounds like:
ballasts, ballistic, ballistics, bellsouth's, biologists, blackstock, blasts, blockades, blockheads, bulkheads