informed

Etymology 1

inform + -ed

verb

1. simple past and past participle of inform

adj

1. Instructed; having knowledge of a fact or area of education.
   An informed young man delivered a lecture on the history of modern art.
2. Based on knowledge; founded on due understanding of a situation.
   Another informed and sobering estimate is that by 1800 indigenous populations in the western hemisphere were a tenth of what they had been three centuries before. 2009, Diarmaid MacCulloch, A History of Christianity, Penguin, published 2010, page 696

Etymology 2

in- + formed the first sense probably uses in- (“in”), the second sense uses in- (“prefix of negation”).

adj

1. (obsolete) Created, given form.
2. (obsolete) Unformed or ill-formed; deformed; shapeless.
   But, mindfull still of your first countries sight , Doe still preserve your first informed grace, Whose shadow yet shynes in your beauteous face 1596, Edmund Spenser, An Hymne in Honour of Beautie
3. (astronomy, obsolete) Not included within the figures of any of the ancient constellations.
   the informed stars