IPA: /vɪˈkɛr.i.əl/
KK: /vɪˈkɛr i əl/
Relating to a vicar or serving in place of someone else.
The vicarial duties were shared among several clergy members.
Vicarial → It is formed from "vicar" (from Latin "vicarius", meaning substitute or deputy) and the suffix "-al" (meaning pertaining to). The word "vicarial" refers to something that pertains to or is characteristic of a vicar, or a substitute in a religious context.
Think of a vicar as a 'substitute' ('vicarius') in a religious role, and remember that 'vicarial' means related to that substitute role.