Question

adequate
ad·e·quate
 /ˈædıkwət/  adj   [more ~; most ~]
  1 : enough for some need or requirement
   Be sure to allow adequate [=sufficient, enough] time for the paint to dry.
   The garden hasn't been getting adequate water.
   The food was more than adequate for the six of us.
  2 : good enough : of a quality that is good or acceptable
   Millions of people lack adequate [=sufficient] health care.
   The school lunch should be adequate to meet the nutritional needs of growing children.
   The machine does an adequate job.
   The tent should provide adequate protection from the elements.
   The quality of his work was perfectly adequate.
  : of a quality that is acceptable but not better than acceptable
   Your grades are adequate but I think you can do better.
   The quality of his work was only/merely/barely adequate.
  — opposite inadequate
  ad·e·qua·cy /ˈædıkwəsi/  noun   [  noncount  ]
   Environmentalists doubt the adequacy of the regulations. [=doubt that the regulations are adequate]
  ad·e·quate·ly  adv  
   Are you adequately prepared for the exam?