Word Type

Adjective

Adjective

The word "spontaneous" can be used as adjective and adjective.

Word Relationships

Opposites (Antonyms)

induced

Derived Terms

spontaneity spontaneous abortion spontaneous combustion spontaneous fission spontaneous generation spontaneous human combustion spontaneous order spontaneous pneumothorax spontaneously

Derived From

eous

Related Terms

apparent cause choice conscious constraint endemic external free generate impulse manual labor native natural planning self spontaneous combustion

Similar Terms

impulsive instinctive instinctive intuitive intuitive natural unprompted unprompted unscripted unscripted

Synonym Network

autonomous

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.