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jack - definition and synonyms


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verb jack pronunciation in American English /dʒæk/
Word Forms
present tense
present participlejacking
past tensejacked
past participlejacked
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phrasal verbs

jack around

Word Forms
present tense
I/you/we/theyjack around
he/she/itjacks around
present participlejacking around
past tensejacked around
past participlejacked around
American informal
  1. 2
    [transitive]jack someone around to treat someone badly because you are not clear or honest with them

jack off

Word Forms
present tense
I/you/we/theyjack off
he/she/itjacks off
present participlejacking off
past tensejacked off
past participlejacked off
American impolite

jack up

Word Forms
present tense
I/you/we/theyjack up
he/she/itjacks up
present participlejacking up
past tensejacked up
past participlejacked up
  1. 1
    [transitive] to use a jack to lift and support a heavy object, especially a car
  2. 2
    [transitive] informal to increase the price, rate, or number of something by a large amount
  3. 3
    [intransitive/transitive] informal to put an illegal drug into your body using a needle
    1. a.
      be jacked up informal to be very excited or nervous, especially because you have taken an illegal drug
  4. 4
    [intransitive] Australian informal to refuse to obey instructions


used to describe something which is done more carefully and over a longer period of time …

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the practice of giving birth in the presence of several friends and relatives

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