From The Collaborative International Dictionary of English v.0.48:
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.]
[1913 Webster]
The box receives all black; but poured from thence,
The stones came candid forth, the hue of innocence.
--Dryden.
[1913 Webster]
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.
[1913 Webster]
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.
[1913 Webster]