Source : Webster's Revised Unabridged Dictionary (1913)

Whatever \What*ev"er\, pron.
   Anything soever which; the thing or things of any kind; being
   this or that; of one nature or another; one thing or another;
   anything that may be; all that; the whole that; all
   particulars that; -- used both substantively and adjectively.

         Whatever fortune stays from his word.    --Shak.

         Whatever Earth, all-bearing mother, yields. --Milton.

         Whatever be its intrinsic value.         --J. H.
                                                  Newman.

   Note: Whatever often follows a noun, being used elliptically.
         ``There being no room for any physical discovery
         whatever'' [sc. it may be]. --Whately.

Source : WordNet®

whatever
     adj : one or some or every or all without specification; "give me
           any peaches you don't want"; "not any milk is left";
           "any child would know that"; "pick any card"; "any day
           now"; "cars can be rented at almost any airport"; "at
           twilight or any other time"; "beyond any doubt"; "need
           any help we can get"; "give me whatever peaches you
           don't want"; "no milk whatsoever is left" [syn: {any(a)},
            {whatsoever}]