Source : Webster's Revised Unabridged Dictionary (1913)

Unformed \Un*formed"\, a. [In sense 1 properly p. p. of un form;
   in senses 2 and 3 pref. un- not + formed.]
   1. Decomposed, or resolved into parts; having the form
      destroyed.

   2. Not formed; not arranged into regular shape, order, or
      relations; shapeless; amorphous.

   3. (Biol.) Unorganized; without definite shape or structure;
      as, an unformed, or unorganized, ferment.

   {Unformed stars} (Astron.), stars not grouped into any
      constellation; informed stars. See {Sporades}.

Source : WordNet®

unformed
     adj 1: not having form or shape; "unformed clay" [ant: {formed}]
     2: not formed or organized; "an as yet unformed government"
     3: not yet fully formed; "unformed still in body and mind"
     4: lacking in development; "immature plans"; "an unformed
        character" [syn: {immature}]