Sentence:  Little disappointed, then, she turned attention to "Chat of the Social World," gossip which exercised potent fascination upon the girl's intelligence. She devoured with more avidity than she had her food those pretentiously phrased chronicles of the snobocracy ... distilling therefrom an <WSD>acid</WSD> envy that robbed her napoleon of all its savour. 
Meaning of the word marked with <WSD> tags:  Sour-tempered.