debacle or débâcle /di-bakˈl or dā-bäˈkl’/

1. A complete failure, break-up or collapse
2. A breaking up of ice on a river
3. A sudden flood of water leaving its path strewed with debris (geology)
4. A stampede

• ululation
• ululations
• ulva
• ulvas
• ulyie
• ulzie
• um
• umami
• umamis
• um and ah
• Umayyad
• umbel
• umbellar
• umbellate
• umbellated
• umbellately
• umbellifer
• Umbelliferae
• umbelliferous
• umbellifers
• umbellule
• umbellules
• umbels
• umber
• umber-bird