soporific

so·po·ri·fic
S1O1P3O1R1I1F4I1C3
UK/ˌsɒp.əˈɹɪf.ɪk/UK/ˌsəʊ.pəˈɹɪf.ɪk/US/ˌsɑp.əˈɹɪf.ɪk/US/ˌsoʊ.pəˈɹɪf.ɪk/

noun

Something inducing sleep, especially a drug.

“The professor delivered a soporific lecture.”

UncommonScrabble 16

Meanings

nounsoporific (plural soporifics)

plural soporifics · alternative obsolete soporifick

  1. medicineSomething inducing sleep, especially a drug.

    The doctor prescribed a soporific to help the patient sleep.

    1 more example

    And ancient soporifics—such as poisonous leaves and various opiate concoctions—were roughly as likely to kill you as they were to induce REM.

    2022 January 27, Derek Thompson, “Can Medieval Sleeping Habits Fix America’s Insomnia?”, in The Atlantic
  2. figurativelySomething boring or dull.
adjectivesoporific (comparative more soporific, superlative most soporific)

comparative more soporific · superlative most soporific · alternative obsolete soporifick

  1. medicineTending to induce sleep.

    It is said that the effect of eating too much lettuce is “soporific.” I have never felt sleepy after eating lettuces; but then I am not a rabbit. They certainly had a very soporific effect upon the Flopsy Bunnies!

    1909, Beatrix Potter, The Tale of The Flopsy Bunnies
    2 more examples

    For we are not here to understand, as perhaps some have, that an author actually falls asleep while he is writing. It is true, that readers are too apt to be so overtaken; […]To say the truth, these soporific parts are so many scenes of serious artfully interwoven, in order to contrast and set off the rest;

    1749, Henry Fielding, chapter I, in The History of Tom Jones, a Foundling, volume (please specify |volume=I to VI), London: A[ndrew] Millar, […], →OCLC, book V

    I should imagine that the smooth riding and the quietness of the diesel or electric cab, coupled with the effect on the eyes of endless successions of sleepers disappearing from sight immediately under the driver's eyes, might in time have a soporific effect, so that the company of a second man, who can assist in signal observations when he is not at work in the engine cab, seems highly desirable in such conditions.

    1961 July, Cecil J. Allen, “Locomotive Running Past and Present”, in Trains Illustrated, page 401
  2. figurativelyBoring, dull.

    The professor delivered a soporific lecture.

    1 more example

    COP stands for conference of the parties under the UNFCCC, and the annual meetings have swung between fractious and soporific, interspersed with moments of high drama and the occasional triumph (the Paris agreement in 2015) and disaster (Copenhagen in 2009).

    2019 December 2, Fiona Harvey, “Climate crisis: what is COP and can it save the world?”, in The Guardian

    Synonyms: banal, basic, mindless, beat, blah, commonplace, bland, boring

Synonyms & antonyms

Narrower

More synonyms by meaning

adjectiveinducing mental lethargy

nouna drug that induces sleep

Similar
Broader
drughypnagogue

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinsopor“deep sleep”
  2. Frenchsoporifique
  3. Englishsoporific

From French soporifique, from Latin sopor (“deep sleep”). Unrelated to stupor (distinct in Proto-Indo-European).

Full word history & related roots →

Translations

Ancient Greek ὑπνωτικός
  • ὑπνωτικός (hupnōtikós)tending to induce sleep
Arabic مُنَوِّم, مُنَوِّم
  • مُنَوِّم (munawwim)sleep inducing agent
  • مُنَوِّم (munawwim)tending to induce sleep
Bulgarian приспива́телно, приспива́телен
  • приспива́телно (prispivátelno)sleep inducing agent
  • приспива́телен (prispivátelen)tending to induce sleep
  • сънотво́рен (sănotvóren)tending to induce sleep
Catalan somnífer, hipnòtic
  • somnífersleep inducing agent
  • hipnòticsleep inducing agent
  • soforíficsleep inducing agent
  • narcòticsleep inducing agent
  • soporífertending to induce sleep
  • soporífictending to induce sleep
  • narcòtictending to induce sleep
  • somnífertending to induce sleep
  • hipnòtictending to induce sleep
Chinese Mandarin 催眠藥 /催眠药, 安眠藥 /安眠药
  • 催眠藥 /催眠药 (cuīmiányào)sleep inducing agent
  • 安眠藥 /安眠药 (ānmiányào)sleep inducing agent
  • 催眠劑 /催眠剂 (cuīmiánjì)sleep inducing agent
  • 催眠的 (cuīmián de)tending to induce sleep
Czech uspávadlo, uspávající
  • uspávadlosleep inducing agent
  • uspávajícítending to induce sleep
Danish sovemiddel
  • sovemiddelsleep inducing agent
Dutch soporatief, slaapmiddel
  • soporatiefsleep inducing agent
  • slaapmiddelsleep inducing agent
  • soporatieftending to induce sleep
  • slaapverwekkendtending to induce sleep
Esperanto dormigilo
  • dormigilosleep inducing agent
Finnish unilääke, unettava
  • unilääkesleep inducing agent
  • unettavatending to induce sleep
French somnifère, soporifique
  • somnifèresleep inducing agent
  • soporifiquetending to induce sleep
German Schlafmittel, einschläfernd
  • Schlafmittelsleep inducing agent
  • einschläferndtending to induce sleep
Greek υπνωτικό, υπνωτικός
  • υπνωτικό (ypnotikó)sleep inducing agent
  • υπνωτικός (ypnotikós)tending to induce sleep
Italian sonnifero, soporifero
  • sonniferosleep inducing agent
  • soporiferotending to induce sleep
  • addormentativotending to induce sleep
  • addormentatoretending to induce sleep
Korean 수면제, 잠이 오게 하는
  • 수면제 (sumyeonje)sleep inducing agent
  • 잠이 오게 하는 (jami oge haneun)tending to induce sleep
Latin sopor, somnifer
  • soporsleep inducing agent
  • somnifertending to induce sleep
  • somnificustending to induce sleep
Māori mea whakamoe, rongoā whakamoe
  • mea whakamoesleep inducing agent
  • rongoā whakamoesleep inducing agent
  • rongoā whakamoetending to induce sleep
Persian خوابآور
  • خوابآور (xâb-âvar)tending to induce sleep
Polish środek nasenny
  • środek nasennysleep inducing agent
Portuguese soporífero, soporífico
  • soporíferosleep inducing agent
  • soporíficosleep inducing agent
  • soporíferotending to induce sleep
  • soporíficotending to induce sleep
Russian снотво́рное, усыпляющий
  • снотво́рное (snotvórnoje)sleep inducing agent
  • усыпляющий (usypljajuščij)tending to induce sleep
  • навевающий сон (navevajuščij son)tending to induce sleep
  • вводящий в сон (vvodjaščij v son)tending to induce sleep
  • снотво́рный (snotvórnyj)tending to induce sleep
  • убаю́кивающий (ubajúkivajuščij)tending to induce sleep
Spanish somnífero, soporífico
  • somníferosleep inducing agent
  • soporíficosleep inducing agent
  • soporíferosleep inducing agent
  • soñolientosleep inducing agent
  • soporíficotending to induce sleep
  • somníferotending to induce sleep
Swedish sömnmedel, sövande
  • sömnmedelsleep inducing agent
  • sövandetending to induce sleep
Ukrainian сноді́йне
  • сноді́йне (snodíjne)sleep inducing agent
Vietnamese thuốc ngủ
  • thuốc ngủsleep inducing agent

Rhymes & wordplay

Rhymes with soporific

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Cite this entry
APA

soporific. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/soporific

MLA

“soporific.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/soporific. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “soporific,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/soporific.

Source: soporific on Wiktionary, CC BY-SA 4.0.