great pleasure; keen enjoyment; relish.
The elderly woman’s zest for living made her seem much younger.He set to work on the project with great zest.

sharpness or intensity of flavor.
This salad dressing has a lot of zest!

excitement; interest.
This room used to be so dull; the new bright colors give it some zest.
She bought a sexy red dress to add a little zest to her wardrobe.
You should go out more and put some zest back into your life.

the topmost layer of the peel of a lemon, lime, orange or other citrus fruit, often grated and used to add flavor to foods.
The pie recipe calls for the zest of one lemon.

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