Showing lack of favoritism.

Roget 939: upright; honest, honest as daylight; veracious etc. 543; virtuous etc. 944; honorable; fair, right, just, equitable, impartial, evenhanded, square; fair and aboveboard, open and aboveboard; white [U.S.].    constant, constant as the northern star; faithful, loyal, staunch; true, true blue, true to one's colors, true to the core, true as the needle to the pole; marble-constant" [Antony and Cleopatra]; true-hearted, trusty, trustworthy; as good as one's word, to be depended on, incorruptible.    straightforward etc. (ingenuous) 703; frank, candid, open-hearted.    conscientious, tender-conscienced, right-minded; high-principled, high-minded; scrupulous, religious, strict; nice, punctilious, correct, punctual; respectable, reputable; gentlemanlike^†.    inviolable, inviolate; unviolated^†, unbroken, unbetrayed; unbought, unbribed^†.    innocent etc. 946; pure, stainless; unstained, untarnished, unsullied, untainted, unperjured^†; uncorrupt, uncorrupted; undefiled, undepraved^†, undebauched^†; integer vitae scelerisque purus [Lat.] [Horace]; justus et tenax propositi [Lat.] [Horace]. chivalrous, jealous of honor, sans peur et sans reproche [Fr.]; high-spirited.    supramundane^†, unworldly, other-worldly, overscrupulous^†.    ... show more

Free from undue bias or preconceived opinions:
— The impartial eye of a scientist.

synonym: unprejudiced.

Roget 498: intelligent [Applied to persons], quick of apprehension, keen, acute, alive, brainy, awake, bright, quick, sharp; quick witted, keen witted, clear witted, sharp-eyed, sharp sighted, sharp witted; wide-awake; canny, shrewd, astute; clear-headed; farsighted etc. 510; discerning, perspicacious, penetrating, piercing; argute^†; quick-witted, nimble-witted, needle-witted; sharp as a needle, sharp as a tack; alive to etc. (cognizant) 490; clever etc. (apt) 698; arch etc. (cunning) 702; pas si bete [Fr.]; acute etc. 682.    wise, sage, sapient, sagacious, reasonable, rational, sound, in one's right mind, sensible, abnormis sapiens [Lat.], judicious, strong-minded.    unprejudiced, unbiased, unbigoted^†, unprepossessed^†; undazzled^†, unperplexed^†; unwarped judgment^†, impartial, equitable, fair.    cool; cool-headed, long-headed, hardheaded, strong-headed; long-sighted, calculating, thoughtful, reflecting; solid, deep, profound.    oracular; heaven-directed, heaven-born.    prudent etc. (cautious) 864; sober, stand, solid; considerate, politic, wise in one's generation; watchful etc. 459; provident etc. (prepared) 673; in advance of one' age; wise as a serpent, wise as Solomon, wise as Solon.    [Applied to actions] wise, sensible, reasonable, judicious; well-thought-out, well-planned, well-judged, well-advised; prudent, politic; expedient etc. 646.    ... show more

Dutch: onbevangen
Polish: nieuprzedzony