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countable and uncountable, plural sufficiencies
(uncountable) The quality or condition of being sufficient. examples
(countable) An adequate amount. quotations examples
But the Eastern front of the Allies was far more vulnerable. Russia could not begin to supply herself with a sufficiency of large guns and of heavy munitionment for them.
1916, Hilaire Belloc, A General Sketch of the European War: The second phase, page 388