change of heart
Altered feelings or attitude, as in Paul didn't like his new job, but a raise prompted a change of heart and he became quite enthusiastic. [Early 1800s]
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |