sabbatary
/sæbætˈɛəriən/Definitions
1. noun
A person who observes the Sabbath, especially a member of a Christian sect that observes the Sabbath as a day of rest and worship.
“Many sabbatarians attend church services on Sundays.”
2. adjective
Relating to or observing the Sabbath, especially as a day of rest and worship.
“The sabbatarian community has a strong tradition of respecting Sundays.”