Her autobiography, infidel, was a 2007 New York Times bestseller.
Initially, Russian news outlets reported that relatives of the victim said the attackers yelled “infidel” as they struck.
From inside the apartment, he could hear people calling him an infidel and debating whether to kill him on the spot.
mid-15c. (adjective and noun), from Middle French infidèle, from Latin infidelis "unfaithful, not to be trusted," later "unbelieving," from in- "not, opposite of" (see in- (1)) + fidelis "faithful" (see fidelity). In 15c. "a non-Christian" (especially a Saracen); later "one who does not believe in religion" (1520s). Also used to translate Arabic qafir, which is from a root meaning "to disbelieve, to deny," strictly referring to all non-Muslims but virtually synonymous with "Christian;" hence, from a Muslim or Jewish point of view, "a Christian" (1530s; see kaffir).