jack up (something)
to raise prices, to raise something with a lifting device
The gas station jacked up their gas prices during the storm. We jacked up the car so that we could change the tire.
jam on the brakes
jazz up (something)
Jekyll and Hyde
jockey for position
jog (someone's) memory
have them rolling in the aisles
keep up appearances
dare (someone) to do (something)
bring up the rear
sound like (something)
feed (someone) a line
chew the fat
put a hold on (something)
by a hair
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