The Collaborative International Dictionary of English v.0.48:

Inform \In*form"\, v. t. [imp. & p. p. Informed; p. pr. & vb.
   n. Informing.] [OE. enformen, OF. enformer, F. informer. L.
   informare; pref. in- in + formare to form, share, fr. forma
   form. See Form.]
   1. To give form or share to; to give vital or organizing
      power to; to give life to; to imbue and actuate with
      vitality; to animate; to mold; to figure; to fashion. "The
      informing Word."                            --Coleridge.
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            Let others better mold the running mass
            Of metals, and inform the breathing brass. --Dryden.
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            Breath informs this fleeting frame.   --Prior.
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            Breathes in our soul, informs our mortal part.
                                                  --Pope.
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   2. To communicate knowledge to; to make known to; to
      acquaint; to advise; to instruct; to tell; to notify; to
      enlighten; -- usually followed by of.
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            For he would learn their business secretly,
            And then inform his master hastily.   --Spenser.
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            I am informed thoroughly of the cause. --Shak.
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   3. To communicate a knowledge of facts to, by way of
      accusation; to warn against anybody.
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            Tertullus . . . informed the governor against Paul.
                                                  --Acts xxiv.
                                                  1.

   Syn: To acquaint; apprise; tell; teach; instruct; enlighten;
        animate; fashion.
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The Collaborative International Dictionary of English v.0.48:

Informed \In*formed"\ ([i^]n*f[^o]rmd"), a.
   Unformed or ill-formed; deformed; shapeless. [Obs.]
   --Spenser.
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   Informed stars. See under Unformed.
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WordNet (r) 3.0 (2006):

informed
    adj 1: having much knowledge or education; "an informed public";
           "informed opinion"; "the informed customer" [ant:
           uninformed]

Moby Thesaurus II by Grady Ward, 1.0:

63 Moby Thesaurus words for "informed":
   abreast, abreast of, acquainted, advised, all ready, all set,
   armed, armed and ready, au courant, au fait, aware of,
   booted and spurred, briefed, coached, cocked, conversant with,
   cultivated, cultured, educated, enlightened, equipped,
   familiarized, good and ready, groomed, in arms, in battle array,
   in readiness, in the know, in the saddle, informed of, instructed,
   intelligent, knowledgeable, learned, loaded, loaded for bear,
   mature, mobilized, on the mark, planned, posted, prearranged,
   prepared, prepared and ready, prepped, primed, provided,
   psyched up, ready, ready for anything, ripe, schooled, set, taught,
   trained, up in arms, up on, up-to-date, versed, vigilant,
   well-prepared, well-versed, wise