[bahy-uh st]


having or showing bias or prejudice: They gave us a biased report on immigration trends.

Also especially British, bi·assed.

Origin of biased

First recorded in 1605–15; bias + -ed2
Related formsbi·ased·ly, adverbnon·bi·ased, adjective




a particular tendency, trend, inclination, feeling, or opinion, especially one that is preconceived or unreasoned: illegal bias against older job applicants; the magazine’s bias toward art rather than photography; our strong bias in favor of the idea.
unreasonably hostile feelings or opinions about a social group; prejudice: accusations of racial bias.
an oblique or diagonal line of direction, especially across a woven fabric.
Statistics. a systematic as opposed to a random distortion of a statistic as a result of sampling procedure.
Lawn Bowling.
  1. a slight bulge or greater weight on one side of the ball or bowl.
  2. the curved course made by such a ball when rolled.
Electronics. the application of a steady voltage or current to an active device, as a diode or transistor, to produce a desired mode of operation.
a high-frequency alternating current applied to the recording head of a tape recorder during recording in order to reduce distortion.


cut, set, folded, etc., diagonally: This material requires a bias cut.


in a diagonal manner; obliquely; slantingly: to cut material bias.

verb (used with object), bi·ased, bi·as·ing or (especially British) bi·assed, bi·as·sing.

to cause to hold or exhibit a particular bias; to influence, especially unfairly: a tearful plea designed to bias the jury; a survey biased toward highly educated people.
Electronics. to apply a steady voltage or current to (the input of an active device).

Origin of bias

1520–30; < Middle French biais oblique < Old Provençal, probably < Vulgar Latin *(e)bigassius < Greek epikársios oblique, equivalent to epi- epi- + -karsios oblique
Related formssub·bi·as, nounsu·per·bi·as, noun

Synonyms for bias

Synonym study

1. Bias, prejudice mean a strong inclination of the mind or a preconceived opinion about something or someone. A bias may be favorable or unfavorable: bias in favor of or against an idea. Prejudice implies a preformed judgment even more unreasoning than bias, and usually implies an unfavorable opinion: prejudice against people of another religion.

Antonyms for bias Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for biased

Contemporary Examples of biased

Historical Examples of biased

British Dictionary definitions for biased



mental tendency or inclination, esp an irrational preference or prejudice
a diagonal line or cut across the weave of a fabric
electronics the voltage applied to an electronic device or system to establish suitable working conditions
  1. a bulge or weight inside one side of a bowl
  2. the curved course of such a bowl on the green
  1. an extraneous latent influence on, unrecognized conflated variable in, or selectivity in a sample which influences its distribution and so renders it unable to reflect the desired population parameters
  2. if T is an estimator of the parameter θ, the expected value of (T–θ)
an inaudible high-frequency signal used to improve the quality of a tape recording


slanting obliquely; diagonala bias fold


obliquely; diagonally

verb -ases, -asing, -ased, -asses, -assing or -assed (tr)

(usually passive) to cause to have a bias; prejudice; influence
Derived Formsbiased or biassed, adjective

Word Origin for bias

C16: from Old French biais, from Old Provençal, perhaps ultimately from Greek epikarsios oblique
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for biased

1610s in reference to bowling, 1660s in reference to persons; past participle adjective from bias (v.).



1520s, from French biais "slant, slope, oblique," also figuratively, "expedient, means" (13c., originally in Old French a past participle adjective, "sideways, askance, against the grain"), of unknown origin, probably from Old Provençal biais, with cognates in Old Catalan and Sardinian; possibly from Vulgar Latin *(e)bigassius, from Greek epikarsios "athwart, crosswise, at an angle," from epi- "upon" + karsios "oblique," from PIE *krs-yo-, from root *(s)ker- "to cut." It became a noun in Old French. "[A] technical term in the game of bowls, whence come all the later uses of the word" [OED]. Transferred sense of "predisposition, prejudice" is from 1570s in English.

For what a man had rather were true he more readily believes. Therefore he rejects difficult things from impatience of research; sober things, because they narrow hope; the deeper things of nature, from superstition; the light of experience, from arrogance and pride, lest his mind should seem to be occupied with things mean and transitory; things not commonly believed, out of deference to the opinion of the vulgar. Numberless in short are the ways, and sometimes imperceptible, in which the affections colour and infect the understanding. [Francis Bacon, "Novum Organum," 1620]



1620s, literal and figurative, from bias (n.). Related: Biased; biasing.

Online Etymology Dictionary, © 2010 Douglas Harper