Word of the Day & Vocabulary logo
Get the app

spontaneous

/spɒnˈteɪnɪəs/adjective

Done on a sudden urge, without any prior planning.

Example sentences

  • “In a spontaneous gesture, he bought flowers for everyone in the office.”
  • “Our spontaneous road trip turned into the best weekend of the summer.”

Approving where 'impulsive' is often critical. A spontaneous person is fun; an impulsive one makes bad decisions.

Featured as word of the day on July 9, 2026.

Synonyms for spontaneous

Antonyms

  • planned
  • premeditated

Often confused with spontaneous

spontaneous vs impulsive

Find it in: Positive words.

Related words

calculatedDone on purpose after careful thought about the likely results, often to get a particular effect.instinctiveDone automatically from natural impulse, without conscious thought.steadfastFirm and unchanging in purpose, loyalty, or belief.sublimeSo excellent or beautiful that it inspires awe.sunshineThe light and warmth that come directly from the sun.sereneQuietly calm and untroubled; free from stress or disturbance.