No, "heartbreaking" is not hyphenated. It is a compound word formed by combining "heart" and "breaking" into a single adjective. When used to describe something that causes deep emotional pain, it is written as one word.
heartbreaking heartbreaking
Many fans were upset after the heartbreaking loss.
Heartbreaking World was created in 1985-10.
A Heartbreaking Work of Staggering Genius was created in 2000.
It is not hyphenated.
A Heartbreaking Work of Staggering Genius has 375 pages.
Motorcycle is not hyphenated
No it's not hyphenated.
words are only hyphenated when they have a separate meaning when separated than they do when hyphenated
Yes it should be hyphenated.
No, "hardworking" is not hyphenated.
It can be. Some words can be seen both hyphenated and non-hyphenated.