1) Amentia 2) Idiocy 3) Imbecility 4) Mongolianism 5) Mongolism 6) Moronity 1) Mental retardation 2) Retardation 3) Slowness 4) SSEN 5) Stupidity 6) Subnormality 
The backwardness model is a theory of economic growth created by Alexander Gerschenkron. The model postulates that the more backward an economy is at the outset of economic development, the more likely certain conditions are to occur. USSR leader Gorbachev once said, `If you don’t move forward, sooner or later you begin to move backward.” Th.....
• (n.) The state of being backward.
Back'ward·ness noun The state of being backward.