intransitive. To become tender; to be affected with pity; to grow soft, soften. Obsolete.

intransitive. To become less harsh, severe, or intense in feeling, appearance, or sensation; to become… Without adverb.

figurative. intransitive. Of a person, his feelings, manner, etc.: To become softened or ‘melted’ in feeling; to throw off coldness and reserve; to…

intransitive. To expand in intellect or sympathy; to become responsive or sympathetic; = to open up at phrasal verbs. Usually with to.

Non-physical senses. intransitive. = sense 14b.