sunset

noun

1. 1

   The moment each evening when the sun disappears below the western horizon.

   at sunset

   ’Twas sunset: when the sun will part There comes a sullenness of heart To him who still would look upon The glory of the summer sun.

2. 2

   The changes in color of the sky before and after sunset.

3. 3

   figurativeThe final period of the life of a person or thing.

   one's sunset years

   'Tis the sunset of life gives me mystical lore.

4. 4

   A set termination date.

   The tax increase legislation included a sunset clause requiring renewal to prevent the tax increase from expiring.

5. 5

   The region where the sun sets; the west.

verb

1. 1

   To phase out.

   We’ll be sunsetting version 1.9 of the software shortly after releasing version 2.0 next quarter.

   Last December, Yahoo announced plans to “sunset” more well-known services, including the pioneering social bookmarking service del.icio.us.

   Here’s what you need to know about Amazon’s decision to sunset its older e-readers and tablets, and what that means for you.

Forms

plural

sunsets

past tense

sunsetted

past participle

sunsetted

present participle

sunsetting

third person singular

sunsets