IPA: /haɪˈrɛtɪkli/
KK: /haɪˈrætɪkli/
In a manner that is related to or characteristic of a priestly or sacred style, often used in reference to ancient writing or art forms.
The text was written hieratically, reflecting the religious significance of the content.
Hieratically is formed from "hieratic" (from Greek "hieratikos", meaning priestly) and the suffix "-ally" (meaning in a manner of). The word describes something done in a priestly or sacred manner, often relating to ancient Egyptian writing or rituals.
Think of 'priestly' ('hieratic') to remember that 'hieratically' means in a manner related to priests or sacred practices.