Zestily is a word that is used to describe activity that is full of enthusiasm and energy. There are various synonyms for this word, depending on the context of the sentence. Some of the synonyms of zestily include vigorously, energetically, zestfully, with fervor, with gusto, with verve, with enthusiasm, and with liveliness. All these words have similar meanings and can be used to describe activity that is done with great enthusiasm and energy. The use of these words can spice up the language in a conversation or writing, making it more vibrant and engaging, and sends a message of positivity and enthusiasm.