well-informed

from WordNet (r) 3.0 (2006)

well-informed
    adj 1: possessing sound knowledge; "well-informed readers" [syn:
           {intelligent}, {well-informed}]

from The Collaborative International Dictionary of English v.0.48

Well-informed \Well`-in*formed"\, a.
   Correctly informed; provided with information; well furnished
   with authentic knowledge; intelligent.
   [1913 Webster]