frum
adj.— «“All of a sudden they decided this side of the town is not for them, they needed to go to the other side, because they’re more frum,” she said, using the Yiddish word for religious.» —“Two neighborhoods reveal Orthodox community’s fault lines” by Amy Klein Jewish Journal (Los Angeles, California) Nov. 10, 2006. (source: Double-Tongued Dictionary)
Further reading
Many of us struggled with the Old English poem “Beowulf” in high school. But what if you could actually hear “Beowulf” in the English of today? There’s a new translation by Maria Dahvana Headley that uses contemporary...
Chad in Hilliard, Florida, wonders about the expression old as Methuselah, meaning “extremely advanced in years.” The phrase references Methuselah, a figure in Jewish, Islamic, and Christian tradition said to be 969 years old when he...
The word is from the German “fromm,” meaning pious. “Frum” is an adjective for Orthodox Jews. A person who is frum is a “frummie.” I’ve heard the latter mostly in reference to women or to groups, not usually to men. It can be a neutral descriptive term or a mildly disdainful one about a person more religious than oneself.