unsufficiency

alternative unsufficience

1. obsoleteuncountableObsolete form of insufficiency.

   The pupils are wanting in regularity of attendance and there is an unsufficiency of books.

   1876, Edward Savard, Inspector of Schools, in Statement of the public accounts of the province of Quebec and annual report of the auditor of the province, p. 219 (at Google Books)

   2 more examples

   Whatsoever, to make up the doctrine of man's salvation, is added as in supply of the Scripture's unsufficiency, we reject it.

   1594, Richard Hooker, Of Ecclesiastical Polity, Book 2, Section 8 (at Google Books)

   The unsufficiency and uncandidness of his answer became painfully apparent in the dead silence of the room.

   1906 January–October, Joseph Conrad, chapter IX, in The Secret Agent: A Simple Tale (Collection of British Authors; 3995), copyright edition, London: Bernhard Tauchnitz, published 1907, →OCLC, page 193