The Collaborative International Dictionary of English v.0.48:

Bona fide \Bo"na fi"de\ [L.]
   In or with good faith; without fraud or deceit; real or
   really; actual or actually; genuine or genuinely; as, you
   must proceed bona fide; a bona fide purchaser or transaction.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bona fide
    adj 1: undertaken in good faith; "a bona fide offer"
    2: not counterfeit or copied; "an authentic signature"; "a bona
       fide manuscript"; "an unquestionable antique"; "photographs
       taken in a veritable bull ring" [syn: authentic, bona
       fide, unquestionable, veritable]

Moby Thesaurus II by Grady Ward, 1.0:

98 Moby Thesaurus words for "bona fide":
   aboveboard, attested, authentic, candid, card-carrying,
   consistently, constantly, devotedly, dinkum, fair and square,
   faithfully, firmly, following the letter, foursquare, genuine,
   good, good-faith, honest, honest-to-God, in good faith,
   inartificial, indubitable, lawful, legitimate, lifelike, literal,
   loyally, natural, naturalistic, on the level, on the square,
   on the up-and-up, open, open and aboveboard, original, pure, real,
   realistic, responsibly, rightful, simon-pure, simple, sincere,
   single-hearted, square, square-dealing, square-shooting, staunchly,
   steadfastly, steadily, sterling, straight, straight-shooting,
   sure-enough, true, true to life, true to nature, true to reality,
   unadulterated, unaffected, unassumed, unassuming, uncolored,
   unconcocted, uncopied, uncounterfeited, undisguised, undisguising,
   undistorted, undoubted, unexaggerated, unfabricated, unfanciful,
   unfeigned, unfeigning, unfictitious, unflattering, unimagined,
   unimitated, uninvented, unpretended, unpretending, unqualified,
   unquestionable, unromantic, unsimulated, unspecious, unsynthetic,
   unvarnished, up-and-up, valid, verbal, verbatim, veridical,
   verisimilar, veritable, with good faith, word-for-word



Bouvier's Law Dictionary, Revised 6th Ed (1856):

BONA FIDE. In or with good faith.
     2. The law requires all persons in their transactions to act with good
faith and a contract where the parties have not acted bona fide is void at
the pleasure of the innocent party. 8 John. R. 446; 12 John. R. 320; 2 John.
Ch. R. 35. If a contract be made with good faith, subsequent fraudulent acts
will not vitiate it; although such acts may raise a presumption of
antecedent fraud, and thus become a means of proving the want of good faith
in making the contract. 2 Miles' Rep. 229; and see also, Rob. Fraud. Conv.
33, 34; Inst. 2, 6 Dig. 41, 3, 10 and 44; Id. 41, 1, 48; Code, 7, 31; 9 Co.
11; Wingate's Maxims, max. 37; Lane, 47; Plowd. 473; 9 Pick. R. 265; 12
Pick. R. 545; 8 Conn. R. 336; 10 Conn. R. 30; 3 Watts, R. 25; 5 Wend. R. 20,
566. In the civil law these actions are called (actiones) bonae fidei, in
which the judge has a. more unrestrained power (liberior potestas) of
estimating how much one person ought to give to or do, for another; whereas,
those actions are said to be stricti juris, in which the power of the judge
is confined to the agreement of the parties. Examples of the foraier are the
actions empti-venditi, locati-conducti, negitiorum gestorum, &c.; of the
latter, the actions ex mutus, ex chirographo, ex stipilatu, ex indebito,
actions proescriptis verbis, &c.