religiously
In the manner of religion.
Other meanings
Passionately or diligently; faithfully; conscientiously.
“It is odd he gets so many cavities since he brushes his teeth religiously, every night, rain or shine.”
Where this comes from
This definition is adapted from “religiously” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.