verb (tr, adverb) informal
DON’T VACILLATE! VANQUISH THIS WORD OF THE DAY QUIZ!
Words nearby jazz up
Idioms and Phrases with jazz up
Enliven, make more interesting, as in They jazzed up the living room with a new rug, or They decided to include a comedy act to jazz up the program.
Modify so as to increase its performance, as in Peter wanted to jazz up his motorbike with a stronger engine. Both usages are colloquialisms from the mid-1900s. Also see juice up.