- zealotn.One who espouses a cause or pursues an object in an immoderately partisan manner
 
- zeitgeistn.The intellectual and moral tendencies that characterize any age or epoch
 
- zenithn.The culminating-point of prosperity, influence, or greatness
 
- zephyrn.Any soft, gentle wind
 
- zodiacn.An imaginary belt encircling the heavens within which are the larger planets