The Collaborative International Dictionary of English v.0.48:

Recognize \Rec"og*nize\ (r[e^]k"[o^]g*n[imac]z), v. t. [imp. &
   p. p. Recognized (r[e^]k"[o^]g*n[imac]zd); p. pr. & vb. n.
   Recognizing (r[e^]k"[o^]g*n[imac]`z[i^]ng).] [From
   Recognizance; see Cognition, and cf. Reconnoiter.]
   [Written also recognise.]
   1. To know again; to perceive the identity of, with a person
      or thing previously known; to recover or recall knowledge
      of.
      [1913 Webster]

            Speak, vassal; recognize thy sovereign queen.
                                                  --Harte.
      [1913 Webster]

   2. To avow knowledge of; to allow that one knows; to consent
      to admit, hold, or the like; to admit with a formal
      acknowledgment; as, to recognize an obligation; to
      recognize a consul.
      [1913 Webster]

   3. To acknowledge acquaintance with, as by salutation,
      bowing, or the like.
      [1913 Webster]

   4. To show appreciation of; as, to recognize services by a
      testimonial.
      [1913 Webster]

   5. To review; to reexamine. [Obs.] --South.
      [1913 Webster]

   6. To reconnoiter. [Obs.] --R. Monro.
      [1913 Webster]

   Syn: To acknowledge; avow; confess; own; allow; concede. See
        Acknowledge.
        [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):

recognized
    adj 1: generally approved or compelling recognition; "several
           accepted techniques for treating the condition"; "his
           recognized superiority in this kind of work" [syn:
           accepted, recognized, recognised]
    2: provided with a secure reputation; "a recognized authority"
       [syn: recognized, recognised]

Moby Thesaurus II by Grady Ward, 1.0:

82 Moby Thesaurus words for "recognized":
   accepted, acknowledged, admitted, affirmed, allowed, appreciated,
   apprehended, approved, ascertained, authenticated, avowed,
   being done, certified, comme il faut, comprehended, conceded,
   conceived, confessed, confirmed, conformable, conventional,
   correct, countersigned, customary, de rigueur, decent, decorous,
   discerned, down pat, endorsed, established, fixed, folk, formal,
   granted, grasped, hallowed, handed down, heroic, hoary, immemorial,
   inveterate, known, legendary, long-established, long-standing,
   meet, mythological, notarized, of long standing, of the folk, oral,
   orthodox, pat, perceived, prehended, prescriptive, professed,
   proper, ratified, realized, received, right, rooted, sealed,
   seemly, seized, signed, stamped, sworn and affirmed, sworn to,
   time-honored, traditional, tried and true, true-blue, understood,
   underwritten, unwritten, validated, venerable, warranted,
   worshipful