Example for daily usage:

• The park becomes lively in the crepuscular hours when people come out for evening walks.
• We spotted several rabbits because they are crepuscular animals that appear at dusk.

Origin and history:

The word "crepuscular" originates from the Latin word "crepusculum", which means "twilight" or "dusk". It is derived from "creper", meaning "dusky", "dark", or "obscure". The term entered the English language in the 17th century to describe something relating to or resembling twilight.

Originally, it was used mostly in scientific and natural studies, especially in zoology to describe animal behaviour.

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Cultural significance and modern usage:

It is a fundamental term for describing species, such as cats, rabbits, deer, and many bats, that avoid the high predation or heat of midday and the darkness of night.

Beyond science, the word evokes a state of being in transition or shadow, often marking moments between order and disorder.

In contemporary contexts, it is commonly used to describe the habits of pets, such as cats, which are most active at dawn and dusk.

It is used to describe the "twilight" or decline of things, similar to "the twilight of an empire".

Descriptive Imagery: It describes, for example, "crepuscular rays" (sunbeams breaking through clouds) or the "crepuscular gloaming".

It is sometimes broken down into "matutinal" (active at dawn) and "vespertine" (active at dusk).

In Italy, it was used to define a 20th-century poetry movement (Crepuscolarismo) that focused on low-key, intimate, and daily life, as opposed to the grandiose, technophile nature of Futurism.

Interesting facts:

• Crepuscular rays are the streaks of sunlight you sometimes see breaking through clouds.
• Many animals avoid predators by being crepuscular, staying hidden during the day and night.
• Twilight light is special because the sun is below the horizon, but its light still scatters through the atmosphere.

Examples from literature:

• Ben asked when they had broken out of Ravenel County and, in a hauntingly crepuscular light were shooting across a causeway where the locks and sluices of an old rice plantation were still visible. - The Great Santini by Pat Conroy
• In the crepuscular light, he is connected again, bound to his father and, through him, to all the family back in Zundert. - Vincent and Theo: The Van Gogh Brothers by Deborah Heiligman
• Colonel Korn was an untidy, disdainful man with an oily skin and deep, hard lines running almost straight down from his nose between his crepuscular jowls and his square, clefted chin.- Catch-22 by Joseph Heller

Synonyms:

• Twilit
• Dusk
• Dusky
• Darkling
• Lightless

Antonyms:

• Light
• Luminous
• Illuminated

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