Impetuous – marked by impulsive vehemence or passion

“Sturm und drang”
“Say that again?”
Sturm und drang. From Klinger”
She posed the pen down on the book to give him full attention.
“Do we have to know that too?”
“Well yes, as the ending act of Neoclassicisim period”
“Jesus, Jesus Christ!” she exploded in a huff, smashing her book on the corner of her desk.