blind

The first thing most people picture is the loss of eyesight: someone who cannot see because of injury, illness, age, or a condition from birth. Then comes a broader, often more human sense: being unaware of reality even when the signs are clear, like being blind to a friend's distress. The word also stretches into process and judgment, where blind taste tests and blind auditions are judged without prejudice from seeing who created the result.

Over time, people also use it for emotional distortion: someone can be blinded by anger, grief, or greed when feelings block clear thinking. It even shows up in chance outcomes—“blind luck” means success without a clear cause or plan. In stories, blindness often marks a deeper theme, from vulnerability to insight, with Oedipus in Sophocles’ tragedy a familiar example.

The word’s core meaning is a person’s loss of sight, either partly or fully. That can be temporary or permanent, and can come from injury, congenital conditions, disease, or age. In this literal sense it is a concrete medical and everyday condition.

Its figurative range is much wider. A person may be blind to the obvious, ignoring evidence that others notice, or blinded by love/rage/ambition when emotion or desire blocks judgment. In these uses, the word points to a gap in understanding, awareness, or moral sight rather than physical vision.

It is also used for fairness-by-design in evaluation systems. A blind review means the assessor does not know the identity of the person being reviewed, helping reduce bias. A blind audition is judged on performance alone, and a blind date pairs people who have not met or seen each other.

In places and objects, the word marks obstruction or lack of access: a blind alley is a dead-end passage, while a blind spot is a gap in what one can see or detect. These technical uses keep returning to the same root idea: a limit in what can be perceived, whether by senses, knowledge, or design.

So the word moves between literal and figurative perception: it can describe missing eyesight, missing awareness, or missing bias, depending on context.