Because of these qualities that came sincerely and spontaneously from a generous heart, everyone flocked about her, for who can resist the charm of one who discovers in others admirable qualities undreamed of even by himself?
She would have been a strikingly beautiful woman had there been any glow in her eyes, any responsive warmth in her smile or any spontaneity in her voice that fell with gentle melody on the ears of her family and her servants.
There are no more uses of "spontaneous" in the book.
Show samples from other sources
The group broke into spontaneous laughter.
He bubbled with enthusiasms, and his faintest smile or lightest laugh seemed spontaneous and genuine.