spontaneous

spon-ta-ne-ous · adjective

imported

Definitions

adjective

  1. 1.

    Performed or occurring without planning.

  2. 2.

    Arising from natural impulse.

  3. 3.

    [science]Occurring without external cause.

Related words

Antonyms: deliberate, planned
See also: impulsive, natural, planned
Synonyms: impulsive, natural, unplanned

Etymology

From Late Latin spontaneus, from Latin sponte ("of one's own accord").