Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


jack sth up

(INCREASE) informal disapproving phrasal verb with jack verb
How to pronounce jack in British English
How to pronounce jack in American English
View dictionary definition of jack sth up »
(Pronunciation of jack sth up (INCREASE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Translations of “jack sth up”

Word of the Day

as husband and wife

in the same way as two people who are married

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More