The phrase "authority inside" is correct and usable in written English.
It can be used to refer to an inherent or internal sense of authority or power within a person or organization.
Example: "She exudes confidence and has a strong authority inside that commands respect from her peers."
Alternatives: "inner authority" or "internal power".
The vice chairman's job does not carry much formal operational authority inside the company.
I am trying to expose the authority inside us and the shadow of political authority in front of our doors".
There would be a Department of State Police, but it would be without the least authority inside the corporate limits of cities.
It was succeeded by a suspicion, now amounting to a resigned conviction, that contemporary art is an industry producing just clothes, with no ruling authority inside them.
Religious leaders command strict authority inside their communities and have the external political power to demand a degree of self-rule.
But there is no doubt that we now live in a world where the power of capital has profoundly disrupted old ideas about political authority inside national boundaries.
"He will not be treated well inside also, this goes without saying, but at least there will be authorities inside".
This is a lesson for everyone — including those trainers who kicked up such a fuss about the authority's "inside information" seminars — to take on board.
B4 IN EUROPE -- Police surveillance of young Arab men living in Milan early this year gave Italian authorities an inside look at groups operating at the edges of Islamic terrorism.
Kennan was a foreign-policy intellectual who also happened to be a government official, and this gave his writing special interest on the outside and authority on the inside.
Belhaj was captured by CIA officers, in co-operation with Thai authorities, inside Bangkok airport.
