Adverb
heartbreakingly (comparative more heartbreakingly, superlative most heartbreakingly)
In a heartbreaking manner
They lost heartbreakingly, with an own goal in the last minute of the match.
Hunting hawks do not belong in cages, no matter how much a man covets their grace, no matter how golden the bars. They are far more beautiful soaring free. Heartbreakingly beautiful. Lois McMaster Bujold
Have you, in truth, ever seen something so heartbreakingly lovely? What are we to make of a world where stars shine bright in the midst of so much darkness and gloom? Kate DiCamillo
You know,” he said, "this is why I love you so much.” Her tone was heartbreakingly warm. "What do you mean?” You don't ask me to go inside because it's cold. You just want to make it easier for me to be where I want to stand. J.R. Ward
He wondered if she'd mind if he threw her down on the blanket and tore off her clothing. (..) She looked heartbreakingly innocent. Alex sighed. She'd probably mind. Julia Quinn
There's something about an American soldier you can't explain. It's a quality... They're so grateful, so heartbreakingly grateful for anything, even a film actress coming to see them. They say thank you for coming, and they really mean it. Marlene Dietrich
And secondly its cast, with several vital performances of note, especially from heartbreakingly vulnerable newcomer Stephen Odubola. Source: Internet