Source : Webster's Revised Unabridged Dictionary (1913)

   Note: In the ancient phrases, all too dear, all too much, all
         so long, etc., this word retains its appropriate sense
         or becomes intensive.

   2. Even; just. (Often a mere intensive adjunct.) [Obs. or
      Poet.]

            All as his straying flock he fed.     --Spenser.

            A damsel lay deploring All on a rock reclined.
                                                  --Gay.

   {All to}, or {All-to}. In such phrases as ``all to rent,''
      ``all to break,'' ``all-to frozen,'' etc., which are of
      frequent occurrence in our old authors, the all and the to
      have commonly been regarded as forming a compound adverb,
      equivalent in meaning to entirely, completely, altogether.
      But the sense of entireness lies wholly in the word all
      (as it does in ``all forlorn,'' and similar expressions),
      and the to properly belongs to the following word, being a
      kind of intensive prefix (orig. meaning asunder and
      answering to the LG. ter-, HG. zer-). It is frequently to
      be met with in old books, used without the all. Thus
      Wyclif says, ``The vail of the temple was to rent:'' and
      of Judas, ``He was hanged and to-burst the middle:'' i.
      e., burst in two, or asunder.

   {All along}. See under {Along}.

   {All and some}, individually and collectively, one and all.
      [Obs.] ``Displeased all and some.'' --Fairfax.

   {All but}.
      (a) Scarcely; not even. [Obs.] --Shak.
      (b) Almost; nearly. ``The fine arts were all but
          proscribed.'' --Macaulay.

   {All hollow}, entirely, completely; as, to beat any one all
      hollow. [Low]

   {All one}, the same thing in effect; that is, wholly the same
      thing.

   {All over}, over the whole extent; thoroughly; wholly; as,
      she is her mother all over. [Colloq.]

   {All the better}, wholly the better; that is, better by the
      whole difference.

   {All the same}, nevertheless. ``There they [certain
      phenomena] remain rooted all the same, whether we
      recognize them or not.'' --J. C. Shairp. ``But Rugby is a
      very nice place all the same.'' --T. Arnold. -- See also
      under {All}, n.

Source : WordNet®

all the same
     adv : despite anything to the contrary (usually following a
           concession); "although I'm a little afraid, however I'd
           like to try it"; "while we disliked each other,
           nevertheless we agreed"; "he was a stern yet fair
           master"; "granted that it is dangerous, all the same I
           still want to go" [syn: {however}, {nevertheless}, {withal},
            {still}, {yet}, {even so}, {nonetheless}, {notwithstanding}]