noun, verb ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Sunset. US, countable, uncountable

   "We’ll meet by the pier at sundown."

2. 2
   the time in the evening at which the sun begins to fall below the horizon wordnet
3. 3
   A hat with a wide brim to shade the eyes from sunlight. countable

Verb

1. 1
   to experience an episode or an onset of some detrimental mental condition like agitation, anxiety, hallucination or dementia, daily at nightfall. intransitive

   ""She also “sundowned”, and someone had to keep an eye on her 24-7.""

Synonyms

All synonyms

sunsetcapduskduskeveningevensong

Antonyms

All antonyms

risedaybreaksunrise

Example

More examples

"Lincoln arrived at Gettysburg at sundown."

Etymology

From sun + down.

Related phrases

sundown syndromesundown town

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.