Tumultuously – Adjective – loud, excited, and emotional. via Merriam-Webster
Encountered in the short story “The Story of an Hour” by Kate Chopin, paragraph ten, sentence one.
“Now her bosom rose and fell tumultuously. She was beginning to recognize this thing that was approaching to possess her, and she was striving to beat it back with her will–as powerless as her two white slender hands would have been. When she abandoned herself a little whispered word escaped her slightly parted lips. She said it over and over under her breath: “free, free, free!””
The word helps describe how she couldn’t hold her true feelings about her husband any more and it figuratively escaped from within her.