Definition of impetuous :
1. Rushing with force and violence; moving with impetus; furious; forcible; violent; as, an impetuous wind; an impetuous torrent.
2. Vehement in feeling; hasty; passionate; violent; as, a man of impetuous temper.
impatient, harum-scarum, fervent, ardent, zealous, animated, importunate, tearaway, headlong, intense, madcap, improvident, longing, intent, brainish, eager, keen, vehement, unconsidered, ill-considered, anxious, hot, burning, yearning, careful, slapdash, enthusiastic, desirous, temerarious, precipitant, glowing, forceful, earnest
impulsive (part of speech: adjective)
rash (part of speech: adjective)
daring, imprudent, incautious, brazen, hectic, unheedful, irresponsible, breakneck, brash, impulsive, thoughtless, careless, desperado, audacious, daredevil, rash, injudicious, reckless, hotheaded, foolhardy
- " No; it is I who am foolish about my burnt hands," answered Abby, in her frank, impetuous way. - "Spinning-Wheel Stories", Louisa May Alcott.
- The charges to which they had been exposed, impetuous as they were, were doubtless less trying than a sustained attack, pressed on by continuous waves of fresh troops, and allowing the defence no breathing space. - "Stonewall Jackson And The American Civil War", G. F. R. Henderson.
- " He is really very quiet," said the squire apologetically, " only he is a little impetuous about getting into a house." - "A Tale of a Lonely Parish", F. Marion Crawford.