마음속 깊은 곳에서 우러나오는 진실하고 간절한.
Sincere and deeply felt; coming from the heart rather than being forced or feigned.
예문:
"The family sent a heartfelt message of thanks to the rescue team."
"I would like to extend my heartfelt condolences to you and your family."
"Her heartfelt performance earned a standing ovation from the crowd."