insufficiency

noun

1. The lack of sufficiency: a shortage, the state of having or being not enough (of something).

   “Near-synonyms: deficiency (broadly synonymous), inadequacy”

   “The troops went hungry because of the insufficiency of their supplies.”

   “She may crowd her days with gaiety, variety, and what are called amusements; she will do so only to find their insufficiency.”

   “On a recent trip down the Rhine many of the trains we saw were still steam-hauled, presumably through an insufficiency of electric locomotives, as yet, to deal with peak summer traffic.”