impetuous

Definitions

Acting or done quickly and without thought or care.

Moving forcefully or rapidly.

Examples

His impetuous decision to quit his job without a backup plan left him struggling to pay his rent.

She regretted her impetuous outburst as soon as she saw the hurt expression on her friend's face.

Synonyms

impulsive rash hasty reckless spontaneous headlong precipitate

Antonyms

cautious deliberate thoughtful prudent circumspect measured careful