spontaneous

Definitions

Performed or occurring as a result of a sudden inner impulse or inclination and without premeditation or external stimulus.

Happening or arising in a natural, often sudden way without apparent external cause.

Having an open, natural, and uninhibited manner.

Examples

We decided to take a spontaneous trip to the beach on a whim.

Her spontaneous laughter filled the room and made everyone smile.

The team held a spontaneous meeting to address the urgent issue.

Synonyms

impulsive unplanned instinctive automatic extemporaneous unpremeditated natural

Antonyms

planned deliberate calculated premeditated intentional forced studied