Light | Definition, Meaning, Synonyms & Antonyms



Casting Light on The Word ‘Light’

Noun and Adjective Usage

“Light” can function as both a noun and an adjective. As a noun, it refers to electromagnetic radiation that is visible to the human eye, illuminating objects and enabling vision. As an adjective, it describes something that has little weight, is not heavy, or has a low density.


Some synonyms for “light” as a noun include illumination, brightness, radiance, and glow. As an adjective, synonyms include weightless, airy, buoyant, and lightweight.


Antonyms for “light” as a noun include darkness, shadow, obscurity, and dimness. As an adjective, antonyms include heavy, weighty, burdensome, and substantial.

Comparative and Superlative Forms

The comparative form of “light” as an adjective is “lighter,” and the superlative form is “lightest.” These forms are used to compare weights or densities between two or more things.

Light in Physics

In physics, “light” refers to electromagnetic radiation that falls within the visible spectrum. It consists of photons that travel at a speed of approximately 299,792 kilometers per second in a vacuum.

Metaphorical Use

“Light” can be used metaphorically to represent knowledge, understanding, or clarity. For example, someone might say, “Let me shed some light on the situation,” meaning they will provide information or insight to clarify a matter.


The word “light” originated from the Old English word “lēoht,” which meant “brightness” or “light.”

Light as Energy

Light carries energy and plays a crucial role in various natural and artificial processes, including photosynthesis, vision, and lighting technologies.

Phrases and Idioms

The word “light” is used in various phrases and idioms. For example, “come to light” means to be revealed or discovered, and “see the light” refers to gaining understanding or changing one’s perspective.

Light in Art and Literature

Light is a prominent element in art and literature, symbolizing enlightenment, hope, purity, and spiritual illumination.

FAQs(Frequently Asked Questions)

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