Out of key

What is Out of key?

Out of key definition and meaning on Dictionary terms:
a plan, design, or program of action to be followed; project.
an underhand plot; intrigue.
a visionary or impractical project.
a body or system of related doctrines, theories, etc.: a scheme of philosophy.

any system of correlated things, parts, etc., or the manner of its arrangement.
a plan, program, or policy officially adopted and followed, as by a government or business: The company’s pension scheme is very successful.
an analytical or tabular statement.
a diagram, map, or the like.
an astrological diagram of the heavens.

verb (used with object), schemed, schem