non–negotiable

non–negotiable /ˌnɑːnnɪˈgoʊʃijəbəl/ adjective
non–negotiable
/ˌnɑːnnɪˈgoʊʃijəbəl/
adjective
Britannica Dictionary definition of NON–NEGOTIABLE
1 
: not allowed to be discussed and possibly changed
2 
finance, of a check : able to be exchanged for money only by the person whose name is on it