Zesting is a term used in cooking and baking to mean the action of grating the rind of a citrus fruit, usually a lemon, lime or orange. However, there are several synonyms you can use instead of zesting. One of them is grating, which means to shred the rind of a fruit. You can also use the word, peeling, which refers to the removal of the outer layer of the fruit using a knife or peeler. Alternatively, you can use the term shaving, which involves the use of a sharp knife to strip off thin slices of the fruit's rind. Other synonyms for zesting are shredding, paring, and flaking.