The Collaborative International Dictionary of English v.0.48:

Indicative \In*dic"a*tive\, a. [L. indicativus: cf. F.
   indicatif.]
   [1913 Webster]
   1. Pointing out; bringing to notice; giving intimation or
      knowledge of something not visible or obvious.
      [1913 Webster]

            That truth is productive of utility, and utility
            indicative of truth, may be thus proved. --Bp.
                                                  Warburton.
      [1913 Webster]

   2. (Fine Arts) Suggestive; representing the whole by a part,
      as a fleet by a ship, a forest by a tree, etc.
      [1913 Webster]

   Indicative mood (Gram.), that mood or form of the verb
      which indicates, that is, which simply affirms or denies
      or inquires; as, he writes; he is not writing; has the
      mail arrived?
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Indicative \In*dic"a*tive\, n. (Gram.)
   The indicative mood.
   [1913 Webster]

WordNet (r) 3.0 (2006):

indicative
    adj 1: relating to the mood of verbs that is used simple in
           declarative statements; "indicative mood" [syn:
           indicative, declarative]
    2: (usually followed by `of') pointing out or revealing clearly;
       "actions indicative of fear" [syn: indicative,
       indicatory, revelatory, significative, suggestive]
    n 1: a mood (grammatically unmarked) that represents the act or
         state as an objective fact [syn: indicative mood,
         indicative, declarative mood, declarative, common
         mood, fact mood]

Moby Thesaurus II by Grady Ward, 1.0:

164 Moby Thesaurus words for "indicative":
   Christophanic, Satanophanic, absolute, adducible, admissible,
   allegorical, allusive, allusory, angelophanic, appearing,
   associational, attestative, attestive, augural, authentic,
   based on, certain, characteristic, circumstantial, conclusive,
   conditional, connotational, connotative, convincing, cumulative,
   damning, decisive, definable, demonstrating, demonstrative,
   denominative, denotational, denotative, designative, determinative,
   diagnostic, disclosive, displaying, documentary, documented,
   emblematic, epiphanic, evidential, evidentiary, evincive, ex parte,
   exhibitive, expositional, expository, expressive, extended,
   extensional, eye-witness, factual, figural, figurative, final,
   firsthand, forerunning, foreshadowing, foreshowing, foretokening,
   forewarning, founded on, full of meaning, full of point,
   full of substance, grounded on, hearsay, heavy with meaning,
   identifying, ideographic, idiosyncratic, imperative, implicational,
   implicative, implicatory, implicit, incarnating, incarnational,
   incontrovertible, indicating, indicatory, indisputable, individual,
   inferential, insinuating, insinuative, insinuatory, intelligible,
   intensional, interpretable, intuitive, ironic, irrefutable,
   irresistible, jussive, manifestative, material, materializing,
   meaning, meaningful, meaty, metaphorical, mode, monitory, mood,
   naming, nuncupative, obligative, optative, overwhelming,
   pathognomonic, peculiar, permissive, pithy, pneumatophanic,
   pointed, potential, precursive, precursory, predictive,
   prefigurative, pregnant, preindicative, premonitory, presageful,
   presaging, presentational, presumptive, probative, prognostic,
   prognosticative, promulgatory, readable, referential, reliable,
   representative, revelational, revelatory, semantic, semiotic,
   sententious, showing, signalizing, significant, significative,
   signifying, subjunctive, substantial, suggestive, sure, symbolic,
   symbolistic, symbological, symptomatic, symptomatologic, telling,
   theophanic, transferred, typical, valid, warning, weighty