The phrase "longtime passion" is correct and usable in written English.
It can be used to describe a strong interest or enthusiasm that has been held for a significant period of time.
Example: "Her longtime passion for painting has led her to exhibit her work in several galleries."
Alternatives: "deep-seated passion" or "enduring passion."
A film based on the play has been a longtime passion project for Ms. Close.
The fit of his longtime passion with his new one, digital photography, was quite accidental, Mr. Mattia said.
For Arthur E. Imperatore Jr., whose family started New York Waterway in 1986, that vision has been a longtime passion.
This is partly because she is a new mother (to Olive, 4 months old), but also because she is focusing on what she said was a longtime passion.
A local restaurateur, Bret Ashman, opened the 750-square-foot space, named after the milk factory across the street, because of his longtime passion for smaller niche brands.
In 2015, Matthew Perry finally realized his longtime passion project to star in and produce the most recent version which (miraculously) is still airing on CBS.
And many combine longtime passions of his -- sports, movies, futuristic designs and the music of Jimi Hendrix, the late guitarist and Seattle native whom Mr. Allen has enshrined in an entire gallery at the new museum -- with real estate projects that are remaking the face of the city.
Occasionally, Pam has offered glimpses into her personal life: her marriage to longtime love Kate, her passion for pitbulls and animal rescue, and her undying devotion to the pop-rock band Journey.
Then there are my longtime, consistent passions.
Her greatest passion and longtime work, however, continually return to racial justice and white anti-racism.
I shared with Georgia, and all the participants, my top five strategies to re-ignite sexuality and rekindle the passion in longtime relationships.
