Etymology
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jump (n.)
1550s, "an act of jumping," from jump (v.). Figurative meaning "sudden abrupt rise" is from 1650s. Meaning "abrupt transition from one point to another" is from 1670s. Sense of "a parachute descent" is from 1922. Meaning "jazz music with a strong beat" first recorded 1937, in Count Basie's "One O'Clock Jump." Jump suit "one-piece coverall modeled on those worn by paratroopers and skydivers" is from 1948. To get a jump on "get ahead, get moving" is from 1910, perhaps a figurative use from the jump-spark that ignites an engine.
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jump (v.)

1520s, "make a spring from the ground" (intransitive), a word with no apparent source in Old or Middle English, perhaps imitative (compare bump (v.)); another theory derives it from words in Gallo-Roman dialects of southwestern France (such as jumba "to rock, to balance, swing," yumpa "to rock") and says it might have been picked up during the Hundred Years War. Similarities have been noted to Swedish dialectal gumpa "spring, jump," German dialectal gampen "jump, hop," but OED finds no basis for a relationship.

It has superseded native leap, bound, and spring in most senses. Meaning "pass abruptly from one state to another" is from 1570s. Meaning "move suddenly with a leap" is from 1724. The transitive meaning "to attack, pounce upon" is from 1789; that of "to do the sex act with" is from 1630s. Related: Jumped; jumping.

Sense in checkers is from 1862. To jump to "obey readily" is from 1886. To jump to a conclusion is from 1704. To jump rope is from 1853; Jumping-rope (n.) is from 1805. Basketball jump-shot "shot made while the player is in the air" is from 1934; also used of billiard shots. Jump in a lake as a dismissive invitation is attested from 1912.

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jump-start (v.)

also jumpstart, "to start a car engine using battery booster cables," by 1970; see jump (n.) + start (v.). The sense of jump is that in the jump-spark ignition system, attested from 1883 in gas-lighting, from c. 1902 as a common way to start an automobile; hence also jumper "wire used to cut out ('jump over') part of a circuit or to close a gap," a sense attested from 1901 in telegraphy. Related: Jumpstarted; jumpstarting. Figurative use by 1975. Jump-leads "jumper-cables" is from 1969; jumper-cables from 1961.

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jumpable (adj.)
1829, originally in horsemanship, from jump (v.) + -able.
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counter-jumper (n.)

old slang for "a salesman in a shop," 1829, from counter (n.1) + agent noun from jump (v.).

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jumper (n.1)
"one who jumps," 1610s, agent noun from jump (v.). In basketball, "jump-shot," from 1934. The meaning "basket on an elastic cord permitting a small child to push off the floor" is short for baby-jumper (1848).
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jumpy (adj.)
"nervous," 1869, from jump (n.) in a sense "sudden involuntary movement" + -y (2). Related: Jumpiness. The jumps "state of nervous excitement" is from 1872.
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jumping (adj.)
1560s, present-participle adjective from jump (v.). Jumping-bean is from 1878 (earlier jumping-seed, 1870, also devil-bean, 1878). Jumping-jack is from 1821 as a kind of child's stringed toy; as a type of fitness exercise that somewhat mimics its motions, it is from 1921.
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jumper (n.2)
article of clothing, 1853, in reference to a kind of loose jacket with sleeves, apparently from mid-17c. jump (n.) "short coat worn by men," also "woman's under-bodice," a word of uncertain origin. It is perhaps from French jupe "skirt" (see jupe) or from some notion in jump (v.). Meaning "sleeveless dress worn over a blouse" is from 1967, short for jumper-dress (1907).
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lope (n.)
late 14c., "a jump, a leap," from lope (v.). Sense of "long, bounding stride" is from 1809.
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