# impetuous

/ˌɪmˈpɛtʃwəs/ (US) · /ɪmpˈɛtʃuːəs/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/impetuous
Updated: 2026-10-18

## Definition

acting quickly without thinking about what will happen next. You do or say things in the moment and may regret them later.

For teachers: acting or done quickly without careful thought or consideration of consequences; marked by impulsive, forceful energy.

## Examples

- He makes impetuous decisions without thinking first.
- She made an impetuous promise to quit her job and travel, without saving any money first.
- His impetuous defense of his friend, though loyal, damaged his credibility with colleagues who valued careful judgment.

## Synonyms

impulsive, rash, Hasty

## Antonyms

cautious, careful, deliberate

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.