This time her face was beaming with spontaneous good-natured kindliness, and direct warm-hearted sincerity.
He was feeling more and more ashamed at having told "such people" the story of his jealousy so sincerely and spontaneously.
It is remarkable that throughout their whole acquaintance Grushenka was absolutely and spontaneously open with the old man, and he seems to have been the only person in the world with whom she was so.
He scowled, he clenched his teeth, and his fixed stare became still more rigid, more concentrated, more terrible, when suddenly, with incredible rapidity, his wrathful, savage face changed, his tightly compressed lips parted, and Dmitri Fyodorovitch broke into uncontrolled, spontaneous laughter.
Why, why does the prosecutor refuse to believe the evidence of Alexey Karamazov, given so genuinely and sincerely, so spontaneously and convincingly?
He was not running to carry out a program, to carry out what he had written, that is, not for an act of premeditated robbery, but he ran suddenly, spontaneously, in a jealous fury.
Oh, he is spontaneous, he is a marvelous mingling of good and evil, he is a lover of culture and Schiller, yet he brawls in taverns and plucks out the beards of his boon companions.
So she didn’t kiss it; so she ran away!" he kept exclaiming with hysterical delight; insolent delight it might have been called, if it had not been so spontaneous.
I’ve come to learn of you, Karamazov," Kolya concluded, in a voice full of spontaneous feeling.
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.