What does supine mean?
Supine is an adjective describing a person or body lying face upward, with the back against the supporting surface. It is especially common in medical, anatomical, and physical-description contexts, where it provides a precise alternative to expressions such as “lying on one’s back.” The word can also be used figuratively to describe someone or something that is passive, complacent, or insufficiently alert, usually with a mildly critical tone. A related noun, “supine,” names a posture in which the body lies face upward, especially in anatomy. Although “supine” can sound elegant or technical in formal writing, plain alternatives such as “lying on your back” are often clearer in everyday speech. Its Latin inheritance gives it a formal character that can suit scientific, literary, or descriptive prose.
Lying face upward on the back; in figurative use, passive or lacking alertness.
"The athlete lay supine on the track after finishing the race."
The figurative sense is often critical, implying excessive passivity or complacency.
The position of a person or body lying face upward, especially in anatomy; also a posture in palmistry in which the palm faces upward.
"The patient was placed in the supine position."
As a noun, it is mainly used in medical, anatomical, or palmistry contexts.
The plural is rare and occurs chiefly when referring to multiple people or bodies in a supine position.
"The two supines remained motionless on the examining tables."
Supine means lying on your back, but in figurative use it can also suggest being too relaxed or passive to act.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does supine come from?
The word comes from Latin supinus, meaning “lying on the back” or “inclined backward.” English borrowed it in the 16th century, initially for bodily posture and later for figurative meanings such as passivity or lack of alertness. The related English words supinate and supination refer to turning the palm upward or upward rotation, and ultimately to the same Latin root.
Related word forms
How supine is actually used
In medical and anatomical contexts, the word is precise and technical. In figurative contexts, it often carries a critical or disapproving connotation, suggesting excessive passivity or lack of initiative.
Easily confused with supine
A person is supine when lying face upward on the back, whereas prone means lying face downward.