Stu·di·ous a.
  1. Given to study; devoted to the acquisition of knowledge from books; as, a studious scholar.
  2. Given to thought, or to the examination of subjects by contemplation; contemplative.
  3. Earnest in endeavors; aiming sedulously; attentive; observant; diligent; -- usually followed by an infinitive or by of; as, be studious to please; studious to find new friends and allies.
  You that are so studious
  Of my affairs, wholly neglect your own.   --Massinger.
  4. Planned with study; deliberate; studied.
     For the frigid villainy of studious lewdness, . . . with apology can be invented?   --Rambler.
  5. Favorable to study; suitable for thought and contemplation; as, the studious shade. [Poetic]
  But let my due feet never fail
  To walk the studious cloister's pale.   --Milton.
  -- Stu*di*ous*ly, adv. -- Stu*di*ous*ness, n.
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  studiousness
       n : diligent study