An operative person or thing.
Any of a class of behaviors that produce consequences by operating (i.e., acting) upon the environment.
That operates to produce an effect.
A man of business.
A public decree.
A busybody.
Philosophical; dealing with causes, reasons, and effects, rather than with details and circumstances; said of literature.
Practical, concerned with making decisions and actions that are useful in practice, not just theory.
Interfering in the affairs of others; officious; meddlesome.