nonpliable
/ˌnɒnplaɪˈæbəl/; nonpliˈæbəl
Definitions
1. adjective
not able to be bent or changed shape; rigid
“The nonpliable metal pipe burst under the pressure.”
2. adjective
lacking the quality of being able to be influenced or moved
“Her nonpliable stance on the issue made it difficult to negotiate.”