controvertible

There are many reasons children and parents become alienated but you have chosen to concentrate solely upon the most controvertible and ignored the mundane albeit less sensational.

From New York Times ● Jan. 14, 2015

Some of his evidence was indeed controvertible, and much of it was questionable.

From Time Magazine Archive

There is no principle less controvertible than that the subject has the same claims on the government for support and protection, as they have on him, for obedience and fidelity.

From Statistical, Historical and Political Description of the Colony of New South Wales and its Dependent Settlements in Van Diemen's Land With a Particular Enumeration of the Advantages Which These Colonies Offer for Emigration, and Their Superiority in Many Respects Over Those Possessed by the United States of America by William Charles Wentworth

All this is doubtless controvertible, and what has been written may serve only to amuse or to disgust those who are better versed in the facts of our history and keener analysts of its laws.

From The Creed of the Old South 1865-1915 by Basil L. (Basil Lanneau) Gildersleeve

In defining as above the position which Christ assumed, we have not entered into controvertible matter.

From Occasional Papers Selected from the Guardian, the Times, and the Saturday Review, 1846-1890 by R. W. (Richard William) Church