The Collaborative International Dictionary of English v.0.48:

Official \Of*fi"cial\, a. [L. officialis: cf. F. officiel. See
   Office, and cf. Official, n.]
   1. Of or pertaining to an office or public trust; as,
      official duties, or routine.
      [1913 Webster]

            That, in the official marks invested, you
            Anon do meet the senate.              --Shak.
      [1913 Webster]

   2. Derived from the proper office or officer, or from the
      proper authority; made or communicated by virtue of
      authority; as, an official statement or report.
      [1913 Webster]

   3. (Pharm.) Approved by authority; sanctioned by the
      pharmacopoeia; appointed to be used in medicine; as, an
      official drug or preparation. Cf. Officinal.
      [1913 Webster]

   4. Discharging an office or function. [Obs.]
      [1913 Webster]

            The stomach and other parts official unto nutrition.
                                                  --Sir T.
                                                  Browne.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Official \Of*fi"cial\, n. [L. officialis a magistrate's servant
   or attendant: cf. F. official. See Official, a., and cf.
   Officer.]
   1. One who holds an office; esp., a subordinate executive
      officer or attendant.
      [1913 Webster]

   2. An ecclesiastical judge appointed by a bishop, chapter,
      archdeacon, etc., with charge of the spiritual
      jurisdiction. --Blackstone.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

established \established\ adj.
   1. brought about or set up or accepted; especially long and
      widely accepted; as, distrust of established authority; a
      team established as a member of a major league; enjoyed
      his prestige as an established writer; an established
      precedent; the established Church. Contrasted with
      unestablished. [Narrower terms: entrenched;
      implanted, planted, rooted; official; recognized]
      [WordNet 1.5]

   2. securely established; as, an established reputation.

   Syn: firm.
        [WordNet 1.5]

   3. settled securely and unconditionally.

   Syn: accomplished, effected.
        [WordNet 1.5]

   4. conforming with accepted standards.
      [WordNet 1.5]

   5. shown to be valid beyond a reasonable doubt; as, the
      established facts in the case.

   Syn: proved.
        [WordNet 1.5 +PJC]

   6. (Bot.) introduced from another region and persisting
      without cultivation; -- of plants.

   Syn: naturalized.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

official
    adj 1: having official authority or sanction; "official
           permission"; "an official representative" [ant:
           unofficial]
    2: of or relating to an office; "official privileges"
    3: verified officially; "the election returns are now official"
    4: conforming to set usage, procedure, or discipline; "in
       prescribed order" [syn: official, prescribed]
    5: (of a church) given official status as a national or state
       institution
    n 1: a worker who holds or is invested with an office [syn:
         official, functionary]
    2: someone who administers the rules of a game or sport; "the
       golfer asked for an official who could give him a ruling"

Moby Thesaurus II by Grady Ward, 1.0:

236 Moby Thesaurus words for "official":
   Federal, absolute, accepted, accredited, administrative,
   administrator, agent, amanuensis, apparently, approved, archon,
   aristocratic, ascendant, authentic, authoritarian, authoritative,
   authorized, autocratic, autonomous, baggage agent, binding,
   bona fide, booked, bureaucrat, bureaucratic, business agent,
   canonical, cathedral, ceremonial, ceremonious, certified,
   chancellor, chief executive, chief executive officer, civic, civil,
   civil servant, claim agent, cleared, clerk, clothed with authority,
   commanding, commercial agent, commission agent, competent,
   consequential, considerable, consignee, constitutional,
   controlling, customer agent, dean, decorous, democratic, despotic,
   dictated, dictatorial, didactic, directing, documented, dominant,
   down, duly constituted, dupe, eminent, empowered, endorsed,
   enrolled, entered, evidently, ex cathedra, ex officio, exec,
   executive, executive director, executive officer,
   executive secretary, factor, fascist, fed, federal, federal agent,
   federalist, federalistic, filed, formal, formulary, freight agent,
   functional, functionary, functionnaire, general agent, governing,
   governmental, great, gubernatorial, hard and fast, hegemonic,
   hegemonistic, heteronomous, imperative, implement, important,
   indexed, industrial, influential, inscribed, instructive,
   instrument, insurance agent, jack-in-office, land agent, law agent,
   lawful, leading, legal, legitimate, licensed, literary agent,
   loan agent, logged, magisterial, magistrate, management, manager,
   managing, managing director, mandarin, mandatory, matriarchal,
   matriarchic, mighty, ministerial, minuted, momentous, monarchal,
   monarchial, monarchic, monocratic, news agent, of record,
   office-bearer, officeholder, officer, officially, officiary,
   oligarchal, oligarchic, on file, on record, on the books,
   outwardly, parliamentarian, parliamentary, parliamentary agent,
   passenger agent, patriarchal, patriarchic, petty tyrant, placeman,
   pluralistic, political, pompous, posted, potent, powerful,
   preceptive, preeminent, prefect, prescribed, prescript,
   prescriptive, president, press agent, prestigious, prexy, pro,
   professedly, professional, prominent, proper, provost,
   public official, public servant, puissant, puppet,
   purchasing agent, ranking, real estate agent, received, recognized,
   recorded, red-tapist, registered, regulation, republican,
   ritualistic, rubric, ruling, sales agent, sanctioned, secretary,
   seemingly, seemly, self-governing, senior, solemn, special agent,
   standard, station agent, statutory, steward, stiff, substantial,
   superior, supervisory, supreme, technical, the administration,
   theatrical agent, theocratic, ticket agent, tool, totalitarian,
   travel agent, treasurer, true, valid, verified, vice-chancellor,
   vice-president, vocational, walking delegate, warden, weighty,
   written down



Bouvier's Law Dictionary, Revised 6th Ed (1856):

OFFICIAL, civil and canon laws. In the ancient civil law, the person who was
the minister of, or attendant upon a magistrate, was called the official.
     2. In the canon law, the person to whom the bishop generally commits
the charge of his spiritual jurisdiction, bears this name. Wood's Inst. 30,
505; Merl. Repert. h.t.