spon·ta·ne·ous 
/spɑnˈteɪnijəs/ adjective
/spɑnˈteɪnijəs/ adjective 1 : done or said in a natural and often sudden way and without a lot of thought or planning
▪ spontaneous laughter ▪ a spontaneous kiss/decision ▪ The comment was completely spontaneous. 2 [more spontaneous; most spontaneous] : doing things that have not been planned but that seem enjoyable and worth doing at a particular time
▪ He's a guy who's spontaneous and fun.
▪ spontaneous laughter ▪ a spontaneous kiss/decision ▪ The comment was completely spontaneous.
▪ He's a guy who's spontaneous and fun.
— spon·ta·ne·ous·ly adverb
▪ He laughed spontaneously. ▪ She acted spontaneously. ▪ They spontaneously decided to go to the beach.
▪ He laughed spontaneously. ▪ She acted spontaneously. ▪ They spontaneously decided to go to the beach.
