spontaneous

Meanings

Adjective

• happening or arising without apparent external cause
  • "spontaneous laughter"
  • "spontaneous combustion"
  • "a spontaneous abortion"

Adjective Satellite

• said or done without having been planned or written in advance

Adj

• Self-generated; happening without any apparent external cause.
• Done by one's own free choice, or without planning.
• Proceeding from natural feeling or native tendency without external or conscious constraint.
• Arising from a momentary impulse.
• Controlled and directed internally; self-active; spontaneous movement characteristic of living things.
• Produced without being planted or without human cultivation or labor.
• Sudden, without warning.
• Said or done without prior planning or prior writing.

Synonyms

abrupt, ad-lib, autonomous, precipitant, precipitate, precipitous, self-generated, spontaneous, subitaneous, sudden, suddent, unwritten

Antonyms

induced