the.com/takfir

A religious ruling that labels another Muslim an unbeliever, sometimes used to justify violence against them.

means A formal religious ruling that brands a fellow Muslim as a disbeliever, often used to justify casting them out of the community — or worse.

from From Arabic kafara, 'to disbelieve' or 'to be ungrateful' (toward God), the same root that gives kafir, 'infidel.' Takfir is the verbal-noun form, literally 'the act of making someone a kafir' — turning a believer into an outsider with a word. The root's deeper sense carries a notion of 'covering' or 'concealing' (a cognate idea found in Semitic languages generally), as if disbelief were a kind of covering-over of truth. The term moved from classical Islamic theology, where scholars debated it with great caution, into modern political and militant usage, where it's applied far more freely — and far more dangerously.

literal root
from kafir, meaning disbeliever
historical weapon
used to justify killing fellow Muslims as heretics
mainstream view
most scholars call indiscriminate takfir itself heretical
modern misuse
extremist groups use it to excommunicate entire societies
the.com · every word