Jack up phrasal verb informal slang
To rapidly increase.
The number of people contracting COVID-19 is jacking up.
To lift something by using a jack.
The refrigerator is jacked up to go in the kitchen.
To increase the cost of something.
The shops are cashing in on temporary shortages by jacking up consumer goods.
To encourage somebody to do something.
My teacher jacked me up enthusiastically and I decided to go to college.
To do harm to, either physically or otherwise.
The war jacked up a heavy toll on human life.
Be very expensive
To refer to a very high price.
Something offers better value for your money.
What is the cost?
To negotiate with someone in order to reach a win-win agreement
The verb "jack" should be conjugated according to its tense.
Used to advise that someone should wear warm or dry clothes, otherwise he or she will catch a very bad cold
"It's snowing outside, you'll catch your death of cold if you don't wear properly."