Greek-English translations for άριστος

• best
  I can either be your best friend or your worst enemy
  Unpacking took the best part of a week
  In my opinion, mushrooms are the best pizza toppings.
• excellent
  Bill and Ted had an excellent adventure last week in preparation of their history exam
• noble
  This country house was occupied by nobles in the 16th century
  He made a noble effort
  He is a noble man who would never put his family in jeopardy
• optimal
  Finding the optimal balance between features and price is a common problem.