[{"Bold_text": "adjective", "List Items": ["coming or resulting from a natural impulse or tendency; without effort or premeditation; natural and unconstrained; unplanned:a spontaneous burst of applause.Synonyms: unpremeditated , free Antonyms: premeditated", "(of a person) given to acting upon sudden impulses.", "(of natural phenomena) arising from internal forces or causes; independent of external agencies; self-acting .", "growing naturally or without cultivation, as plants and fruits; indigenous .", "produced by natural process."]}]