nonconvertible
adjective
non·con·vert·ible ˌnän-kən-ˈvər-tə-bəl 
: not convertible: such as
a
: not able to be exchanged for a specified equivalent
nonconvertible currencies
b
: not having a top that may be lowered or removed
a nonconvertible car
Example Sentences
Recent Examples on the Web The highest-end laptops detailed today are the ThinkPad X13 Yoga Gen 3 and its nonconvertible version. 
Scharon Harding, Ars Technica, 15 Mar. 2022 His shop sold South African wine to local customers in exchange for nonconvertible New Zim dollars. Craig Richardson, National Review, 10 Dec. 2020 Meanwhile, Seagate, which helped assemble the Bain consortium, will contribute as much as $1.25 billion in the form of nonconvertible preferred securities, the person said. Dana Cimilluca, WSJ, 20 Sep. 2017
Scharon Harding, Ars Technica, 15 Mar. 2022 His shop sold South African wine to local customers in exchange for nonconvertible New Zim dollars. Craig Richardson, National Review, 10 Dec. 2020 Meanwhile, Seagate, which helped assemble the Bain consortium, will contribute as much as $1.25 billion in the form of nonconvertible preferred securities, the person said. Dana Cimilluca, WSJ, 20 Sep. 2017 Word History
First Known Use
1812, in the meaning defined above