← Back to browsespontaneous/spɒnˈteɪniəs/adjective#9,614Translation自発的なじはつてきなEnglish definitionPerformed without planning; resulting from a sudden impulse.ExamplesThe crowd broke into spontaneous applause.Similar wordsspontaneouslyspontaneityinstantaneoussimultaneoussubcutaneouscutaneous← royaltygtk →