jump

n.

1. A leap up or across

   skip, hop, leap, hopping, rise, upsurge, rising, pounce, lunge, leaping, jumping, skipping, running jump, broad jump, high jump, vault, bounce, hurdle, spring, bound, saltation, buckjump, leapfrogging, caper, dance, gambol.

2. A leap down

   precipitation, plunge, dive, diving, nosedive, plummet, headlong fall, descent, drop, fall, parachute jump, bungee jump, sky diving; see also dive 1, drop 2.

3. An obstacle

   hurdle, bar, fence; see barrier.

4. Distance jumped

   leap, stretch, vault; see height 1, length 1.

5. A sudden nervous movement

   start, jerk, twitch, jolt; see jerk 1.

6. A sudden rise

   ascent, spurt, inflation, hike*; see increase 1, rise 2.

get (<strong><em>or</em> </strong>have) the jump on*

jump

v.

1. To leap across or up

   vault, leap, leap over, spring, surge, lurch, lunge, pounce, pop up, pop out, bound, hop, skip, high-jump, broad-jump, take, hurdle, top, cavort, gambol, bounce.

2. To leap down

   drop, plummet, plunge, sky-dive, parachute, bail out; see also dive, fall 1.

3. To pass over

   skip, bypass, cover, cross, traverse, flit, shift, leave out, omit, miss.

4. To jerk

   start, twitch, jiggle, jounce, rattle, quiver, shake, rebound, recoil, flinch, wince, dance, skip, ricochet, bounce; see also bounce 1.

5. *To leave suddenly

   skip, abandon, clear out; see escape, leave 1.

6. To board

   mount, climb on, hop on, spring upon; see sense 1; board 2, catch 7.

7. *To accost belligerently

   ambush, hold up, pounce on, mug*; see ambush, attack 2.