A derailed executive is an previously-named high-potential employee who has reached the middle management level, only to find that there is little chance of future advancement (as previously thought) due to a misfit between job requirements and personal skills. Thus, the executive either plateaus or leaves the organization altogether. That is the original CCL studies definition. Sometimes the term also refers to leaders who experience big failures after reaching the executive spot and, more recently, those involved in ethical scandals.
Whatever your definition of a bad leader is, most have several of the following 10 leadership shortcomings:
Lack of energy/enthusiasm: OK so some people are less visibly enthusiastic than others, thanks to a personality trait called introversion. But there’s an effort to be made, no matter what your personality style, to covey and inspire energy and enthusiasm in your team. And there is NEVER an excuse for complaining. Either do it, change it, or leave it.