• (RP) IPA: /ˈs(j)uːpaɪn/
• (GA) IPA: /ˌsuˈpaɪn/, /ˈsuˌpaɪn/

supine

1. lie#Verb|Lying on its back#Noun|back.

   Synonyms: reclined

   Antonyms: prone, prostrate

2. (figuratively) Reluctant to take action due to indifference or moral#Adjective|moral weakness; apathetic or passive#Adjective|passive towards something.

   Synonyms: passive, peaceful, lazy, lethargic, listless

   • 1748, [David Hume], “Essay V. Sceptical Solution of These Doubts.”, in Philosophical Essays Concerning Human Understanding, London: Printed for A[ndrew] Millar, […], OCLC 642589706 ↗, part I, page 70 ↗:

     The Academics talk always of Doubts and ſuſpense of Judgment, of Danger in haſty Determinations, of confining to the very narrow Bounds the Enquiries of the Understanding, and of renouncing all Speculations that lie not within the Limits of common Life and Practice. Nothing, therefore, can be more contrary than ſuch a Philoſophy to the ſupine Indolence of the Mind, its raſh Arrogance, its lofty Pretenſions, and its ſuperſtitious Credulity.

   • 1788, Publius [pseudonym; Alexander Hamilton], “Number XXIX. Concerning the Militia.”, in The Federalist: A Collection of Essays, Written in Favour of the New Constitution, […] In Two Volumes, volume I, New York, N.Y.: Printed and sold by J. and A. M'Lean, […], OCLC 642792893 ↗, page 184 ↗:

     In times of inſurrection or invaſion it would be natural and proper that the militia of a neighbouring ſtate ſhould be marched into another to reſiſt a common enemy or to guard the republic againſt the violences of faction or ſedition. […] If the power of affording it be placed under the direction of the Union, there will be no danger of a ſupine and liſtleſs inattention to the dangers of a neighbour, till its near approach had ſuperadded the incitements of ſelf preſervation to the too feeble impulſes of duty and ſympathy.

3. (rare, now, poetic) incline#Verb|Inclining or lean#Verb|leaning backward; inclined#Adjective|inclined, sloping#Adjective|sloping.

   Synonyms: inclined, sloping

   • 1697, “The First Book of the {{w”, in John Dryden, transl., The Works of Virgil: Containing His Pastorals, Georgics, and Æneis. […], London: Printed for Jacob Tonson, […], OCLC 403869432 ↗, lines 372–375, page 82 ↗:

     But if the Vine / On riſing Ground be plac'd, or Hills ſupine, / Extend thy looſe Battalions largely wide, / Opening thy Ranks and Files on either Side: {{...}

• nonsupine

• resupine

• French: supinal
• German: in Rückenlage
• Italian: supino
• Portuguese: supino
• Russian: лежа́щий на спине́
• Spanish: supino, supino

• Portuguese: passivo, letárgico

• Portuguese: inclinado

supine (plural supines)

1. (grammar, also, attributively) In Latin and other languages: a type of verbal noun used in the ablative and accusative cases, which share#Verb|shares the same stem#Noun|stem as the passive participle.
2. (grammar, also, attributively) In Swedish: a verb form that combine#Verb|combines with an inflection of ha to form the present perfect and pluperfect tense#Noun|tenses.

• French: supin
• German: Lagewort, Supinum
• Russian: супи́н
• Spanish: supino