The Collaborative International Dictionary of English v.0.48:

factual \fac"tu*al\ (f[a^]k*t[-u]"al), a.
   1. of or pertaining to facts; as, factual inaccuracies. [R.]
      [1913 Webster]

   2. containing only facts (as contrasted with opinions or
      speculations); as, a factual report.
      [PJC]

WordNet (r) 3.0 (2006):

factual
    adj 1: existing in act or fact; "rocks and trees...the actual
           world"; "actual heroism"; "the actual things that
           produced the emotion you experienced" [syn: actual,
           factual]
    2: of or relating to or characterized by facts; "factual
       considerations"

Moby Thesaurus II by Grady Ward, 1.0:

119 Moby Thesaurus words for "factual":
   absolute, accurate, actual, adducible, admissible,
   admitting no question, ascertained, attestative, attested,
   attestive, authentic, authenticated, based on, bona fide,
   categorically true, certain, certified, circumstantial, conclusive,
   confirmable, confirmed, convincing, correct, corroborated,
   cumulative, damning, de facto, decisive, demonstrable,
   demonstratable, demonstrated, determinative, determined,
   documentary, documented, effectual, established, evidential,
   evidentiary, ex parte, eye-witness, faithful, final, firsthand,
   for real, founded on, genuine, grounded on, hard, hearsay,
   historical, honest-to-God, implicit, inappealable, incontestable,
   incontrovertible, indicative, indisputable, indubitable,
   irrefragable, irrefutable, irresistible, legitimate, material,
   not in error, nuncupative, objective, objectively true,
   overwhelming, positive, precise, presumptive, probative, provable,
   proved, real, realistic, reliable, self-evident, significant,
   straightforward, substantial, substantiated, suggestive, sure,
   sure-enough, symptomatic, telling, testable, true, true as gospel,
   true to life, truthful, unanswerable, unbiased, unconfutable,
   unconfuted, undeniable, undenied, undistorted, undoubted,
   unerroneous, unexaggerated, unfallacious, unfalse, unimpeachable,
   unmistaken, unprejudiced, unquestionable, unrefutable, unrefuted,
   unvarnished, valid, validated, veracious, verifiable, verified,
   veritable, weighty