Here are some adjectives for you:
Zinciferous: containing zinc
Zoetic: of or pertaining to life
Zonked: highly intoxicated or under the influence of a drug; completely exhausted
(I don't need to define those three)
I tried to limit the list to those that could even possibly be used in a negative context. It's up to someone else to figure out how.
Formerly of Lakshmi, now in Asura