The Collaborative International Dictionary of English v.0.48:

Eulogy \Eu"lo*gy\, n.; pl. Eulogies. [Gr. ?, from ? well
   speaking; e'y^ well + ? to speak. Cf. Eulogium, and see
   Legend.]
   A speech or writing in commendation of the character or
   services of a person; as, a fitting eulogy to worth.
   [1913 Webster]

         Eulogies turn into elegies.              --Spenser.

   Syn: Encomium; praise; panegyric; applause.

   Usage: Eulogy, Eulogium, Encomium, Panegyric. The
          idea of praise is common to all these words. The word
          encomium is used of both persons and things which are
          the result of human action, and denotes warm praise.
          Eulogium and eulogy apply only to persons and are more
          studied and of greater length. A panegyric was
          originally a set speech in a full assembly of the
          people, and hence denotes a more formal eulogy,
          couched in terms of warm and continuous praise,
          especially as to personal character. We may bestow
          encomiums on any work of art, on production of genius,
          without reference to the performer; we bestow
          eulogies, or pronounce a eulogium, upon some
          individual distinguished for his merit public
          services; we pronounce a panegyric before an assembly
          gathered for the occasion.
          [1913 Webster]

WordNet (r) 3.0 (2006):

eulogy
    n 1: a formal expression of praise for someone who has died
         recently [syn: eulogy, eulogium]
    2: a formal expression of praise [syn: encomium, eulogy,
       panegyric, paean, pean]

Moby Thesaurus II by Grady Ward, 1.0:

117 Moby Thesaurus words for "eulogy":
   acclaim, acclamation, accolade, address, adulation,
   after-dinner speech, allocution, apotheosis, applause,
   bepraisement, burial service, chalk talk, citation, commendation,
   compliment, congratulation, coronach, dead march, death knell,
   death song, deathwatch, debate, declamation, deification, diatribe,
   dirge, elegy, eloge, encomium, epicedium, eulogium, exaltation,
   excessive praise, exequies, exhortation, extreme unction,
   filibuster, flattery, forensic, forensic address, formal speech,
   funeral march, funeral oration, funeral rites, funeral song,
   glorification, glory, graveside oration, harangue, hero worship,
   homage, hommage, honor, honorable mention, hortatory address,
   idolatry, idolizing, inaugural, inaugural address, invective,
   jeremiad, keen, knell, kudos, last duty, last honors, last offices,
   last rites, laud, laudation, lionizing, magnification,
   meed of praise, mention, monody, muffled drums, obsequies, oration,
   overpraise, paean, panegyric, passing bell, pep talk, peroration,
   philippic, pitch, plaudits, praise, prepared speech, prepared text,
   public speech, reading, recital, recitation, requiem, requiem mass,
   sales talk, salutation, salutatory, salutatory address, say,
   screed, set speech, speech, speechification, speeching, talk,
   talkathon, threnode, threnody, tirade, tribute, valediction,
   valedictory, valedictory address, viaticum, wake



The Devil's Dictionary (1881-1906):

EULOGY, n.  Praise of a person who has either the advantages of wealth
and power, or the consideration to be dead.