bias

bias — noun

1. an unfair slant in judgment caused by personal views, not by the facts

1.nounC2
Definition

an unfair slant in judgment caused by personal views, not by the facts

Example

The judge was removed because his bias against young drivers was clear.

collocation: bias against + group

News readers should not let political bias shape their reports.

Common collocations
  • political bias
  • racial bias
  • bias against
  • bias in favor of
Synonyms
  • prejudice

    often stronger and more negative, especially about people or groups

  • partiality

    more formal and stresses unfair support for one side

  • favoritism

    focuses on giving special treatment, not just holding an opinion

  • slant

    informal; often used for news or reporting

Antonyms
  • fairness

    judging without giving one side extra weight

  • impartiality

    formal word for not favoring either side

  • objectivity

    focuses on facts instead of personal feelings

Grammar Patterns

bias against someone

bias toward someone or something

bias in favor of someone or something

Usage Note

Common after against, toward, or in favor of. Distinguish from noun/2, which can describe a simple liking without unfairness.

Common Mistakes

The judge had a bias to the defendant.
The judge had a bias against the defendant.
For this sense, bias usually takes against, toward, or in favor of, not to.

2. a natural liking, tendency, or talent for one subject or kind of thing

2.nounC1
Definition

a natural liking, tendency, or talent for one subject or kind of thing

Example

Evan has a bias toward history and reads war books for fun.

pattern: bias toward + subject

Her design work shows a clear bias for simple colors.

Common collocations
  • bias toward history
  • bias for simple design
  • natural bias
  • artistic bias
Synonyms
  • preference

    the most general word for liking one choice more than another

  • inclination

    slightly formal; stresses a natural tendency

  • bent

    fairly formal; often suggests a natural ability or mental direction

  • taste

    often used for likes in art, food, or style

Antonyms

Grammar Patterns

bias toward something

bias for something

Usage Note

Often followed by toward or for. It can describe taste, study interest, or a natural gift, and it does not have to suggest unfairness.

Common Mistakes

Ella has a bias against painting' (when meaning she likes math more).
Ella has a bias toward math.
Against suggests negative prejudice in noun/1, not simple preference.

3. a one-sided pattern in research information caused by the way it was gathered

3.nounC2
Definition

a one-sided pattern in research information caused by the way it was gathered

Example

The survey had a bias because it asked only online shoppers.

cause of bias in sampling

Doctors checked the study for age bias in the patient group.

Common collocations
  • sampling bias
  • selection bias
  • bias in the data
  • remove bias
Synonyms
  • distortion

    general word for something made less accurate

  • skew

    often used for data that leans too much in one direction

  • systematic error

    technical term for an error that happens in a repeated way

Antonyms
  • balance

    an even spread without one side getting extra weight

  • representativeness

    technical term for data that matches the wider group well

Grammar Patterns

bias in the data

remove bias from a study

Usage Note

Common in research, surveys, and machine learning. The problem usually comes from who or what was included, left out, or measured.

4. the built-in off-center shape in a bowls ball, causing it to curve as it rolls

4.nounC2
Definition

the built-in off-center shape in a bowls ball, causing it to curve as it rolls

Example

Liam aimed wide because the bowl's bias would bring the bowl back.

the bowl's bias

Coach Tan showed the children how the bias changed the path.

Common collocations
  • the bowl's bias
  • strong bias
  • test the bias
  • bias on the green
Synonyms
  • curve

    general word; bias is the special term in bowls

  • swerve

    focuses on the movement, not the built-in design

Antonyms

Grammar Patterns

the bowl's bias

strong bias

Usage Note

Mostly used in bowls. It can name the built-in uneven shape or, by extension, the curve that shape produces.

5. a diagonal direction across cloth, running between the straight threads

5.nounC2
Definition

a diagonal direction across cloth, running between the straight threads

Example

Ms. Chen marked the bias before cutting the silk dress.

The tailor folded the cloth to find the true bias.

find the true bias in cloth

Common collocations
  • on the bias
  • along the bias
  • find the bias
  • bias of the fabric
Synonyms
Antonyms

Grammar Patterns

on the bias

along the bias

Usage Note

Usually appears in sewing language, especially in phrases like on the bias or along the bias. It names the diagonal direction itself, not the finished cutting method in noun/6.

6. the way cloth is cut diagonally so a garment falls more softly

6.nounC2
Definition

the way cloth is cut diagonally so a garment falls more softly

Example

The skirt hangs well because it was cut on the bias.

fixed phrase: cut on the bias

This dress uses the bias through the hips for easier movement.

Common collocations
  • cut on the bias
  • dress on the bias
  • skirt on the bias
  • use the bias
Synonyms
Antonyms

Grammar Patterns

cut on the bias

Usage Note

Most often appears in the fixed phrase cut on the bias. Distinguish from noun/5, which names the diagonal line or direction in the cloth.

Common Mistakes

The tailor cut the dress in the bias.
The tailor cut the dress on the bias.
The usual preposition in this sewing phrase is on.

bias — verb

bias — adjective

Word family

Synonym discussion

Sense: noun/1

For noun/1, bias is the broadest choice for an unfair lean in judgment. Prejudice is usually stronger and often targets a social group, so it sounds harsher. Partiality is more formal and often appears in legal, official, or academic writing. Favoritism focuses on actions that give one person or side special treatment, not just the opinion behind them. Slant is informal and is common when talking about media or the way information is presented. You can say a teacher showed favoritism to one student, a report had a political slant, or a hiring panel was accused of bias.

prejudicepartialityfavoritismslant

Common collocations

Nouns

  • personal bias
  • political bias
  • cultural bias
  • selection bias

Phrases

  • show bias
  • have a bias
  • remove bias
  • cut on the bias

Prepositions

Etymology

FrenchEnglish

English borrowed bias from French. The earlier idea was something slanting or off-center, especially in cloth or movement. From that physical sense, English later developed the figurative meaning of a mind or result leaning to one side instead of staying even.