Definition

1. Noun:

   • The daily event of the sun sinking below the horizon: The moment and visual phenomenon when the sun disappears from view in the evening.
   • The time in the evening at which the sun begins to fall below the horizon: The specific time of day when sunset occurs.
   • The atmospheric phenomena accompanying the daily disappearance of the sun: The colors and light effects in the sky, such as red, orange, and purple hues, that occur during sunset.

2. Adjective (often used before a noun):

   • Providing for automatic termination: Describing a law, rule, or provision that is designed to expire or cease to have effect after a specific date unless renewed.
   • Of or relating to a declining industry or technology: Describing something that is in its final stages, becoming obsolete, or fading in importance.

Examples of Usage

• Noun:

  • We watched the beautiful sunset from the beach. (We observed the visual event.)
  • Sunset is at 7:45 PM tonight. (The time of the event is 7:45 PM.)
  • The sky was painted with the brilliant colors of sunset. (The atmospheric phenomena were brilliant.)

• Adjective:

  • The law included a sunset clause that would cause it to expire in five years.
  • He worked in a sunset industry that was being replaced by new technologies.

Advanced Usage

• "To sunset" (verb, less common): To schedule something, like a program or product, to be discontinued or phased out.
  • The company decided to sunset the old software version by the end of the year.

Variants and Related Words

• Sundown (noun): A synonym for sunset, especially referring to the time.
• Sunsetter (noun, rare): A person who watches sunsets.
• Sunset-like (adjective): Resembling the colors or appearance of a sunset.

Synonyms

• Noun: Dusk, nightfall, sundown, evening, gloaming (poetic).
• Adjective (for termination): Expiring, terminating, self-eliminating.
• Adjective (for decline): Declining, dying, obsolete, waning.

Related Phrases

• Sunset years: The final years of a person's life.
  • They traveled the world during their sunset years.
• Sunset law: A statute that automatically terminates an agency or program on a certain date unless it is formally renewed.
• Sunset provision: A specific condition within a law or contract that causes it to expire.

Idioms

• Ride off into the sunset: To achieve a happy ending or conclusion, often implying retirement or departure from difficulties. (Originates from Western films where the hero rides away at sunset.)
  • After solving the crisis, the CEO sold the company and rode off into the sunset.

Adjective

1. providing for termination
   • a program with a sunset provision
2. of a declining industry or technology
   • sunset industries

Noun

1. the daily event of the sun sinking below the horizon
2. atmospheric phenomena accompanying the daily disappearance of the sun
3. the time in the evening at which the sun begins to fall below the horizon