insistence

US /ɪnˈsɪs.təns/
UK /ɪnˈsɪs.təns/
1.

sự khăng khăng

an occasion when you demand something and refuse to accept opposition, or when you say firmly that something is true:

:
•
Insistence on better working conditions by the union has resulted in fewer employee absences.
:
insistinsist on