• Of, resembling, or relating to twilight.
  • (Of an animal) Appearing or active in twilight.

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Example Sentences

“Crepuscular animals are most active in the twilight.”

“The crepuscular hours, when the sky turns deep red and purple, are my favorite time to walk along the lake.” 

“Deer, rabbits, bears, skunks, bobcats, and even possums are generally considered to be crepuscular.”

Word Origin

Latin, mid-17th century

Why this word?

“Crepuscular” is a somewhat medical-sounding word for the waning hours of day, but it comes directly from the Latin word “crepusculum,” which means “twilight.” “Auroral,” meaning “relating to dawn,” is the opposite of “crepuscular.”

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