double-jointed
UK[ˌdʌb.əlˈdʒɔɪn.tɪd]US[ˌdʌb.əlˈdʒɔɪn.t̬ɪd]
adj
Having joints that allow an unusual degree of flexibility of movement, typically in the fingers, arms, or legs.
Morpheme Breakdown
double
joint
ed
double
twofold
joint
articulation point
ed
adjective suffix
Etymology
The term "double-jointed" is a folk anatomical description rather than a precise medical one. It originates from the 19th century, combining the concept of "double" (implying an extra or unusual degree) with "jointed" (having joints). The logic suggests joints that seem to have a double range of motion or an extra hinge, though in reality, it describes hypermobility due to shallow joint sockets or stretchy ligaments. This compound word reflects a layperson's interpretation of flexibility, where "double" serves as a metaphorical intensifier to convey an ability beyond the normal single range of motion.
Analysis
Structure: double (twofold) + joint (articulation point) + ed (adjective suffix)
- double: From Latin duplus (twofold, double). In this compound, it functions as an intensifier meaning "more than usual" or "extra."
- joint: From Old French joint, from Latin iunctus (joined). In this compound, it refers to the anatomical point where bones connect.
- ed: A suffix of Old English origin, used to form adjectives from nouns, meaning "having the quality of."
Examples
The contortionist was remarkably double-jointed, able to bend her limbs into seemingly impossible positions.
Many children appear to be double-jointed in their fingers, but this flexibility often decreases with age.
He claimed his double-jointed thumbs were an advantage for playing certain video games.