• (British) IPA: /səˈɹiːn/　
• (America) IPA: /səˈɹin/

serene

1. Peaceful, calm, unruffled.

   She looked at her students with joviality and a serene mentality.

   • 1910, Emerson Hough, chapter I, in The Purchase Price: Or The Cause of Compromise, Indianapolis, Ind.: The Bobbs-Merrill Company, OCLC 639762314 ↗, page 0045 ↗:

     Serene, smiling, enigmatic, she faced him with no fear whatever showing in her dark eyes. The clear light of the bright autumn morning had no terrors for youth and health like hers.

2. Without worry or anxiety; unaffected by disturbance.
3. (archaic) fair and unclouded (as of the sky); clear; unobscured.
   • 1709, Alexander Pope, Pastorals, Daphne:

     The moon, serene in glory, mounts the sky.

   • Full many a gem of purest ray serene / The dark unfathomed caves of ocean bear.

4. Used as part of certain titles, originally to indicate sovereignty or independence.

   Her Serene Highness

• serenity

• French: serein, sereine
• German: gelassen, ruhig
• Italian: sereno
• Portuguese: sereno
• Russian: безмяте́жный
• Spanish: sereno

• French: serein, sereine
• Italian: sereno
• Portuguese: sereno
• Russian: чи́стый
• Spanish: sereno

• Russian: светлость
• Spanish: sereno

serene (serenes, present participle serening; past and past participle serened)

1. (transitive) To make serene.

   • Heaven and earth, as if contending, vie / To raise his being, and serene his soul.

serene (plural serenes)

1. (poetic) Serenity; clearness; calmness.
   • 1801, Robert Southey, Thalaba the Destroyer

     the serene of heaven

   • 1742, Edward Young, Night Thoughts on Life, Death and Immortality

     To their master is denied / To share their sweet serene.

2. Evening air; night chill.
   • c. 1605-1606, Ben Jonson, Volpone (The Fox)

     Some serene blast me.

serene (plural serenes)

1. A fine rain from a cloudless sky after sunset.

• serein

1. A female given name. A rare variant of Serena.
   • 1596, Edmund Spenser, The Faerie Qveene. […], London: Printed [by John Wolfe] for VVilliam Ponsonbie, OCLC 960102938 ↗, book VI, canto VI, stanza 18:

     The Prince according to the former token, / Which faire Serene to him delivered had, {{...}