Source : Webster's Revised Unabridged Dictionary (1913)

Candid \Can*did\ (k[a^]n"d[i^]d), a. [F. candide (cf. It.
   candido), L. candidus white, fr. cand[=e]re to be of a
   glowing white; akin to accend[e^]re, incend[e^]re, to set on
   fire, Skr. chand to shine. Cf. {Candle}, {Incense}.]
   1. White. [Obs.]

            The box receives all black; but poured from thence,
            The stones came candid forth, the hue of innocence.
                                                  --Dryden.

   2. Free from undue bias; disposed to think and judge
      according to truth and justice, or without partiality or
      prejudice; fair; just; impartial; as, a candid opinion.
      ``Candid and dispassionate men.'' --W. Irving.

   3. Open; frank; ingenuous; outspoken.

   Syn: Fair; open; ingenuous; impartial; just; frank; artless;
        unbiased; equitable.

   Usage: {Candid}, {Fair}, {Open}, {Frank}, {Ingenuous}. A man
          is fair when he puts things on a just or equitable
          footing; he is candid when be looks impartially on
          both sides of a subject, doing justice especially to
          the motives and conduct of an opponent; he is open and
          frank when he declares his sentiments without reserve;
          he is ingenuous when he does this from a noble regard
          for truth. Fair dealing; candid investigation; an open
          temper; a frank disposition; an ingenuous answer or
          declaration.

Source : WordNet®

candid
     adj 1: characterized by directness in manner or speech; without
            subtlety or evasion; "blunt talking and straight
            shooting"; "a blunt New England farmer"; "I gave them
            my candid opinion"; "forthright criticism"; "a
            forthright approach to the problem"; "tell me what you
            think--and you may just as well be frank"; "it is
            possible to be outspoken without being rude";
            "plainspoken and to the point"; "a point-blank
            accusation" [syn: {blunt}, {forthright}, {frank}, {free-spoken},
             {outspoken}, {plainspoken}, {point-blank}, {straight-from-the-shoulder}]
     2: informal or natural; especially caught off guard or
        unprepared; "a candid photograph"; "a candid interview"
     3: openly straightforward and direct without reserve or
        secretiveness; "his candid eyes"; "an open and trusting
        nature"; "a heart-to-heart talk" [syn: {open}, {heart-to-heart}]
     4: starkly realistic; "I have never lacked candid critics in my
        own ranks"-Clement Atlee