superlong

adjective

su·​per·​long ˌsü-pər-ˈlȯŋ 

: extremely long

I went from resting and recovering much of the year to working superlong days on this new film.

—Debbie Gibson

The biggest purse fetish of the moment: a superlong strap.

—Cosmopolitan

Word History

First Known Use

1836, in the meaning defined above