Definition of 7 Wastes of Lean:
The 7 wastes are at the root of all unprofitable activity within your organization. The 7 wastes consist of:
Use the acronym DOTWIMP to remember the 7 wastes of Lean.
The worst of all the 7 wastes is overproduction because it includes in essence all others and was the main driving force for the Toyota JIT system, they were smart enough to tackle this one to eliminate the rest.