Avidity (noun) – keen eagerness or consuming greed.

Source: https://www.merriam-webster.com/dictionary/avidity

From “The Complete Fiction of Nella Larson” by Nella Larsen, “Quicksand” Chapter 15 Page 112

“And she was shocked in with which Olsen beside her drank it in.”

Here, the author uses the word avidity to describe how Olsen is eager, while Helga is annoyed and feels shamed by the performance she went to see at Copenhagen vaudeville hall.