sufficiency in WordNet English dictionary

1. the quality of being sufficient for the end in view
   "he questioned the sufficiency of human intelligence"
   sufficiency  adequacy 
   
2. an 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"
   enough  sufficiency 
   
3. sufficient resources to provide comfort and meet obligations
   "her father questioned the young suitor's sufficiency"
   sufficiency