A to Z Challenge: Z

Today is the last day of the Challenge, Yay!  Congratulations to everyone who made it through.  I am really excited to have made it to the end and look forward to next year.  I already have ideas for next years theme.

Zenith
Definition: the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected.
Sentence: Zenith, the point in the celestial sphere directly overhead.
            — Henry White Warren

Zephyr
Definition: a slight wind (usually refreshing).
Sentence: Nor I. On the contrary, all the allusions to the winds are of the gentler kind,—"balmy Zephyrs," "whispering breezes" and so forth. 
            — Alexander Pope

Zealous
Definition: marked by active interest and enthusiasm.
Sentence: "You are so willing and zealous; but for that very reason I must guard against your enthusiasm carrying you too far."
            — Lucy Foster Madison

Zest
Definition: vigorous and enthusiastic enjoyment.
Sentence: So I pursued my studies with zest and unabated enthusiasm. 
— Geraldine Farrar

Zealot
Definition: a fervent and even militant proponent of something.
Sentence: Finally having conquered his irritable bowel syndrome, he worked out like a zealot all winter, adding about 17 pounds of solid muscle. 
           — Seattle Times (Feb 29, 2012)