Answer:
By studying the suffix, the reader can determine that impetuous most likely means to be impulsive, to act quickly without thought or care.
Step-by-step explanation:
The suffix ous have often been used to anglicize Latin adjectives with terminations that cannot be directly adapted into English. In this case, the word impetu comes from Latin, and means atack. Impetuous is an adjective that helps describe a person as maybe violent or that moves forcefully or rapidly without thinking much.