I. ˈsü-ˌpīn noun
Etymology: Middle English supyn, from Late Latin supinum, from Latin, neuter of supinus, adjective
Date: 15th century
1. : a Latin verbal noun having an accusative of purpose in -um and an ablative of specification in -u
2. : an English infinitive with to
II. su̇-ˈpīn, attrib also ˈsü-ˌpīn adjective
Etymology: Middle English suppyne, from Latin supinus; akin to Latin sub under, up to — more at up
Date: 15th century
1.
a. : lying on the back or with the face upward
b. : marked by supination
2. : exhibiting indolent or apathetic inertia or passivity ; especially : mentally or morally slack
3. archaic : leaning or sloping backward
Synonyms: see prone , inactive
• su·pine·ly su̇-ˈpīn-lē adverb
• su·pine·ness -ˈpīn-nəs noun