debacle (n.)

• beating
• breakdown
• breakup
• cascade
• cataclysm
• cataract
• catastrophe
• cave
• chute
• collapse
• comedown
• conquering
• conquest
• convulsion
• counterrevolution
• crack-up
• crash
• deathblow
• declension
• declination
• defeat
• descension
• descent
• destruction
• disaster
• down
• downfall
• downgrade
• downpour
• downturn
• drop
• dropping
• drubbing
• failure
• fall
• gravitation
• hiding
• inclination
• licking
• mastery
• overthrow
• overturn
• pounce
• quietus
• rapids
• revolt
• revolution
• revulsion
• rout
• ruin
• shipwreck
• smash
• spasm
• stoop
• subjugation
• subversion
• swoop
• thrashing
• trimming
• trouncing
• undoing
• upset
• washout
• waterfall
• whipping
• wrack
• wreck