1.  Jim's knowledge about insects makes him an (authoritarian authoritative) person to consult for information about ants.

2.  Because he refused to listen to those whose opinions differed from his, the leader was (authoritarian authoritative).

3.  The Oxford English Dictionary is an (authoritarian authoritative) source for researchers interested in the etymology of a word.

4.  I called Joe's Auto Shop because I consider the mechanics there to be (authoritarian authoritative).

5.  Harry S. Truman is considered to have been an (authoritarian authoritative) leader.

6.  Mussolini  acted in an (authoritarian authoritative) manner.

7.  A good teacher instructs in an (authoritarian authoritative) way.

8.  People rightly feel intimidated when a person acts in an (authoritarian authoritative) manner.

9.   IRS agents conducting an audit should treat a taxpayer in an (authoritarian authoritative) way.

10. I am sure about my answer because I feel (authoritarian authoritative) in that subject area.