IPA: //ʌnˈskrɪpʧərəl//
KK: /ʌnˈskrɪpʧərəl/
Not based on or in accordance with religious scriptures or texts.
The teachings of the group were considered unscriptural by many traditional believers.
Unscrptural → It is formed from "un-" (meaning not) and "scriptural" (from Latin "scriptura", meaning writing or scripture). The word "unscriptural" means not in accordance with or contrary to scripture or religious writings.
Think of 'not' ('un-') being applied to 'scripture' ('scriptura'), which helps you remember that 'unscriptural' refers to something that does not align with religious texts.