Possible Clues:

• Covet; be jealous of
• Green emotion?
• Deadly desire
• One might go green with such newborn vegans principally speaking
• Emotion akin to jealousy
• Be green, environmentally disposing of metal nuts (about 50)
• The-grass-is-greener feeling
• It 'slayeth the silly one': Job
• Need to keep up with the Joneses
• Sin for which diplomat has nothing to lose