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What was serenus, the Latin root of the word serene, used to describe?

serene

American  
[suh-reen] / səˈrin /

adjective

  1. calm, peaceful, or tranquil; unruffled.

    a serene landscape;

    serene old age.

    Synonyms:
    collected, composed, unperturbed, imperturbable, undisturbed
    Antonyms:
    disturbed
  2. clear; fair.

    serene weather.

    Synonyms:
    unclouded
    Antonyms:
    clouded
  3. Usually Serene most high or august (used as a royal epithet, usually preceded by his, your, etc.).

    His Serene Highness.


noun

  1. serenity; tranquility.

    the serene of early morning at the lake.

  2. Archaic. a clear or tranquil expanse of sea or sky.

serene British  
/ sɪˈriːn /

adjective

  1. peaceful or tranquil; calm

  2. clear or bright

    a serene sky

  3. (often capital) honoured: used as part of certain royal titles

    His Serene Highness

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See peaceful.

Other Word Forms

Etymology

Origin of serene

First recorded in 1400–50; Middle English, from Old French serein and Latin serēnus (of the sky, weather) “clear, unclouded”

Explanation

Choose the adjective serene to describe someone who is calm and untroubled. If you tell someone horrible news and they remain serene, you might wonder if they heard you! Related to the Latin word serenus "peaceful, calm, clear," serene was originally used in English, as in Latin, to describe calm weather. By the mid 1600s, however, it was used figuratively to describe a calm, untroubled person as well. Though people show their emotions pretty openly today, Victorian novels are full of characters who remain serene no matter how terrible the news.

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Vocabulary lists containing serene

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

From the serene heights of the foreign-policy establishment to the fever swamps of the online left and right, a consensus has emerged.

From The Wall Street Journal Aug. 31, 2026

Life begins as a fanfare — a regal entry heralded by brass — and ends as a solo cello lament and the serene acceptance of death as sung by a choir.

From Los Angeles Times Aug. 11, 2026

Despite its sedate rural surroundings, operations at the Category B jail have been far from serene, with people describing a picture of chaos following the first private-to-private transfer of a prison in England and Wales.

From BBC Aug. 9, 2026

The home spans 1,836 square feet and is described in its listing as an “enchanting” dwelling that perfectly blends “privacy, character, and serene canyon living.”

From MarketWatch Jul. 24, 2026

Elowen sat back in her throne, a serene look on her face as she folded her ringed hands in her lap.

From "Huntress" by Malinda Lo

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