valedictory

valedictory
    adj 1: of or relating to an occasion or expression of farewell;
           "a valedictory address"; "valedictory praise for his
           uniformly manly course"; "a suitable valedictory gesture"
    2: of a speech expressing leave-taking; "a valedictory address"
    n 1: a farewell oration (especially one delivered during
         graduation exercises by an outstanding member of a
         graduating class) [syn: {valediction}, {valedictory
         address}, {valedictory oration}, {valedictory}]
    

Valedictory \Val`e*dic"to*ry\, a.
   Bidding farewell; suitable or designed for an occasion of
   leave-taking; as, a valedictory oration.
   [1913 Webster]
    

Valedictory \Val`e*dic"to*ry\, n.; pl. {Valedictories}.
   A valedictory oration or address spoken at commencement in
   American colleges or seminaries by one of the graduating
   class, usually by the leading scholar.
   [1913 Webster]
    

65 Moby Thesaurus words for "valedictory":
      Godspeed, address, adieu, after-dinner speech, allocution, aloha,
      chalk talk, conge, debate, declamation, departing, diatribe,
      doch-an-dorrach, eulogy, exhortation, farewell, filibuster, final,
      forensic, forensic address, formal speech, funeral oration,
      good-bye, harangue, hortatory address, inaugural,
      inaugural address, invective, jeremiad, last, leave, leave-taking,
      leaving, oration, outward-bound, parting, parting words, pep talk,
      peroration, philippic, pitch, prepared speech, prepared text,
      public speech, reading, recital, recitation, sales talk,
      salutatory, salutatory address, say, screed, send-off, set speech,
      speech, speechification, speeching, stirrup cup, talk, talkathon,
      tirade, valediction, valedictorian, valedictory address,
      viaticum