The Collaborative International Dictionary of English v.0.48:

Suggestive \Sug*gest"ive\, a.
   Containing a suggestion, hint, or intimation. --
   Sug*gest"ive*ly, adv. -- Sug*gest"ive*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

suggestive
    adj 1: tending to suggest or imply; "artifacts suggestive of an
           ancient society"; "an implicative statement" [syn:
           implicative, suggestive]
    2: (usually followed by `of') pointing out or revealing clearly;
       "actions indicative of fear" [syn: indicative,
       indicatory, revelatory, significative, suggestive]
    3: tending to suggest something improper or indecent; "a
       suggestive nod"; "suggestive poses"

Moby Thesaurus II by Grady Ward, 1.0:

161 Moby Thesaurus words for "suggestive":
   absolute, adducible, admissible, allegorical, allusive, allusory,
   associational, attestative, attestive, authentic, based on, bawdy,
   blue, broad, certain, circumstantial, conclusive, connotational,
   connotative, convincing, cumulative, damning, decisive, definable,
   demonstrative, denominative, denotational, denotative, designative,
   determinative, diagnostic, dirty, documentary, documented, earthy,
   emblematic, erotic, evidential, evidentiary, evocative, ex parte,
   exhibitive, expressive, extended, extensional, eye-witness,
   factual, figural, figurative, final, firsthand, founded on,
   full of meaning, full of point, full of substance, graphic,
   grounded on, hearsay, identifying, ideographic, idiosyncratic,
   imaginative, immodest, implicational, implicative, implicatory,
   implicit, improper, in retrospect, incontrovertible, indecent,
   indelicate, indicating, indicative, indicatory, indisputable,
   individual, inferential, insinuating, insinuative, insinuatory,
   intelligible, intensional, interpretable, ironic, irrefutable,
   irresistible, lewd, lusty, material, meaning, meaningful, meaty,
   memoried, metaphorical, mindful, mnemonic, naming, naughty,
   nuncupative, off color, off-color, offensive, overwhelming,
   pathognomonic, peculiar, pithy, pointed, pornographic, pregnant,
   presumptive, probative, provocative, prurient, purple, racy,
   raunchy, readable, redolent, referential, reliable, remindful,
   reminiscent, representative, retentive, retrospective, ribald,
   risky, risque, rude, salacious, salty, scabrous, semantic,
   semiotic, sententious, sexy, shady, signalizing, significant,
   significative, signifying, smutty, spicy, substantial,
   suggestive of, sure, symbolic, symbolistic, symbological,
   symptomatic, symptomatologic, telling, transferred, typical,
   unseemly, valid, vivid, vulgar, weighty, wicked