Impetuous and Spontaneous

Impetuous

Impetuous adjective - Characterized by undue haste and lack of thought or deliberation.

Spontaneous is a synonym for impetuous in rash topic. In some cases you can use "Spontaneous" instead an adjective "Impetuous", when it comes to topics like acting without thinking.

Nearby Words: impetuosity, impetuously

Spontaneous

Spontaneous adjective - Done instantly and without conscious thought or decision.
Usage example: hugging a crying child is simply a spontaneous reaction

Impetuous is a synonym for spontaneous in impulsive topic. You can use "Impetuous" instead an adjective "Spontaneous", if it concerns topics such as unforced.

Nearby Words: spontaneity, spontaneously
Cite this Source
Spontaneous and Impetuous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impetuous/spontaneous
Impetuous & Spontaneous. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impetuous/spontaneous>.
Spontaneous or Impetuous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impetuous/spontaneous.
Google Ngram Viewer shows how "impetuous" and "spontaneous" have occurred on timeline