[1] : The Collaborative International Dictionary of English v.0.48

demonstrative \demon"strative\, n. gram.
   a demonstrative pronoun; as, "this" and "that" are
   demonstratives.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

demonstrative \demon"strative\, a. f. d'emonstratif, l.
   demonstrativus.
   1. having the nature of demonstration; tending to
      demonstrate; making evident; exhibiting clearly or
      conclusively. "demonstrative figures." --dryden.
      1913 webster

            an argument necessary and demonstrative. --hooker.
      1913 webster

   2. expressing, or apt to express, much; displaying feeling or
      sentiment; as, her nature was demonstrative.
      1913 webster

   3. consisting of eulogy or of invective. "demonstrative
      eloquence." --blair.
      1913 webster

   demonstrative pronoun gram., a pronoun distinctly
      designating that to which it refers.
      1913 webster
see also:
demonstrative pronoun 

[3] : WordNet (r) 2.0

demonstrative
     adj 1: given to or marked by the open expression of emotion; "an
            affectionate and demonstrative family" ant: undemonstrative
     2: serving to demonstrate syn: illustrative
     n : a pronoun that points out an intended referent syn: demonstrative
         pronoun
see also:
undemonstrative illustrative demonstrative pronoun 

[4] : Moby Thesaurus II by Grady Ward, 1.0

162 moby thesaurus words for "demonstrative":
   christophanic, satanophanic, accessible, adoring, affectional,
   affectionate, affective, allegorizing, angelophanic, annotative,
   apodictic, appearing, approachable, candid, clarifying,
   communicative, conjugal, connotative, conversable, critical,
   demonstrating, demonstrational, demythologizing, denominative,
   denotative, designative, devoted, diagnostic, disclosive,
   displaying, editorial, effusive, elucidative, emblematic,
   emotiometabolic, emotiomotor, emotional, emotiovascular, emotive,
   enlightening, epiphanic, euhemeristic, evident, evidential,
   evincive, exegetic, exemplificative, exhibitive, expansive,
   explaining, explanatory, explicative, explicatory, expositional,
   expositive, expository, expressive, extroverted, faithful, feeling,
   figural, figurative, filial, fond, frank, free, free-speaking,
   free-spoken, free-tongued, glandular, glossarial, gossipy, gut,
   husbandly, identifying, ideographic, idiosyncratic, illuminating,
   illuminative, illustrative, implicative, incarnating,
   incarnational, indicating, indicative, indicatory, individual,
   languishing, lovelorn, lovesick, lovesome, loving, manifestative,
   materializing, maternal, meaningful, melting, metaphorical, naming,
   newsy, of soul, open, outgoing, outpouring, outspoken,
   overdemonstrative, parental, paternal, pathognomonic, peculiar,
   plain, pneumatophanic, presentational, probative, profuse,
   promulgatory, provable, rationalistic, rationalizing,
   representative, revelational, revelatory, romantic, scholiastic,
   self-revealing, self-revelatory, semantic, semiotic, sentimental,
   showing, signalizing, significant, significative, signifying,
   sociable, soft, soulful, suggestive, symbolic, symbolistic,
   symbological, symptomatic, symptomatologic, talkative, tender,
   theophanic, typical, unconstrained, unhampered, unrepressed,
   unreserved, unrestrained, unrestricted, unreticent, unsecretive,
   unshrinking, unsilent, unsuppressed, uxorious, visceral, warm,
   wifely

Demonstrative >> D Words
Demonstrative, definition of term: Demonstrative
demonstrative_pag1.html

Demonstrative P >> D Words
Demonstrative P, definition of term: Demonstrative P
demonstrative+p_pag1.html