Sentence:  "Oh! where, where is my uncle?" cried Elizabeth, darting from her seat as she finished the letter, in eagerness to follow him, with-out losing a moment of the time so precious; but as she reached the door, it was opened by a servant, and Mr. Darcy appeared. Her pale face and <WSD>impetuous</WSD> manner made him start ... 
Meaning of the word marked with <WSD> tags:  Characterized by sudden violence or vehemence.