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color blind

color blind

2 3.7
Unable to see the difference between some colors, often red and green
  • adjective
  • /ˈkʌlər blaɪnd/
  • US
translation icon : daltónico
  • Being color blind means he cannot distinguish between certain colors, especially red and green.

Now you look at these balls, green and red and your friend is colour blind.

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Examples

Synonyms

color-blind
vscolor blind
  • US
8 4.0

Unable to tell some colors apart, often red and green

is the same meaning but written without a hyphen
colorblind
vscolor blind
  • Specialized
1 3.6

Not able to see some colors or tell them apart

specifies red and green loss due to deficiency of color-sensitive cells

Surface Forms

color blind positive
colour blind positive

Morphology

color + blind

The literal sense 'unable to see colors' is directly derivable from 'color' + 'blind', so learners will grasp that basic meaning; however the sociopolitical sense 'not considering race' is a metaphorical extension and may not be predicted by a B1 learner who has not seen the expression. Because the social/ideological meaning is related to but not fully transparent from the parts (and can be ambiguous with the literal sense), the item is best classified as semi-transparent.

Etymology

Color blind originally described a medical problem: it named people whose eyes are 'blind' to certain colors because they lack the special cells that help tell those colors apart, so red and green can look similar. That's why it means 'unable to distinguish certain colors'.