[ bahy-uhs ]
See synonyms for bias on
  1. 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.

  2. unreasonably hostile feelings or opinions about a social group; prejudice: accusations of racial bias.

  1. an oblique or diagonal line of direction, especially across a woven fabric.

  2. Statistics. a systematic as opposed to a random distortion of a statistic as a result of sampling procedure.

  3. Lawn Bowling.

    • a slight bulge or greater weight on one side of the ball or bowl.

    • the curved course made by such a ball when rolled.

  4. 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.

  5. a high-frequency alternating current applied to the recording head of a tape recorder during recording in order to reduce distortion.

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

  1. 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.
  1. 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.

  2. Electronics. to apply a steady voltage or current to (the input of an active device).

Idioms about bias

  1. on the bias,

    • in the diagonal direction of the cloth.

    • out of line; slanting.

Origin of bias

First recorded in 1520–30; from Middle French biais “oblique,” from Old Provençal, probably from Vulgar Latin (e)bigassius (unrecorded), from Greek epikársios “oblique,” equivalent to epi- epi- + -karsios “oblique”

synonym study For bias

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.

Other words for bias

Opposites for bias

Other words from bias

  • sub·bi·as, noun
  • su·per·bi·as, noun

Words Nearby bias

Other definitions for Bias (2 of 2)

[ bahy-uhs ]

  1. flourished 570 b.c., Greek philosopher, born in Ionia. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use bias in a sentence

British Dictionary definitions for bias


/ (ˈbaɪəs) /

  1. mental tendency or inclination, esp an irrational preference or prejudice

  2. a diagonal line or cut across the weave of a fabric

  1. electronics the voltage applied to an electronic device or system to establish suitable working conditions

  2. bowls

    • a bulge or weight inside one side of a bowl

    • the curved course of such a bowl on the green

  3. statistics

    • 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

    • if T is an estimator of the parameter θ, the expected value of (T–θ)

  4. an inaudible high-frequency signal used to improve the quality of a tape recording

  1. slanting obliquely; diagonal: a bias fold

  1. obliquely; diagonally

verb-ases, -asing, -ased, -asses, -assing or -assed (tr)
  1. (usually passive) to cause to have a bias; prejudice; influence

Origin of bias

C16: from Old French biais, from Old Provençal, perhaps ultimately from Greek epikarsios oblique

Derived forms of bias

  • biased or biassed, adjective

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