house_of_cards
1. [ noun ] a speculative scheme that depends on unstable factors that the planner cannot control
Synonyms: bubble
Examples:

"his proposal was nothing but a house of cards" "a real estate bubble"

Related terms: scheme
2. [ noun ] (cards) an unstable construction with playing cards
Synonyms: cardcastle card-house cardhouse
Examples:

"he built three levels of his cardcastle before it collapsed"

Related terms: structure
Similar spelling:   house_of_God
  House_of_Commons
  house_of_islam