get the jump on

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Related to get the jump on: without a hitch, so much for, be in touch, in droves

get (or have) the jump on

get (or have) an advantage over someone as a result of your prompt action. North American informal
1912 George Ade Knocking the Neighbors Rufus was sinfully Rich…his Family had drilled into him the low-down Habit of getting the Jump on the Other Fellow.
See also: get, jump, on