Open English Wordnet
Nouns
(n)sufficiencysufficient resources to provide comfort and meet obligations“her father questioned the young suitor's sufficiency”
(n)enough, sufficiencyan adequate quantity; a quantity that is large enough to achieve a purpose“enough is as good as a feast”, “there is more than a sufficiency of lawyers in this country”
(n)sufficiency, adequacythe quality of being sufficient for the end in view“he questioned the sufficiency of human intelligence”