كفر

كَفَّارَةٌ ذ a subst. from تَكْفِيرُ اليَمِينِ, (S,) or an intensive epithet in which the quality of a subst. predominates; signifying [ An expiation for a sin or crime or a violated oath; ] an action, or a quality, which has the effect of effacing a wrong action or sin or crime; (TA;) that which covers, or conceals, sins or crimes; such as the كفّارة of oaths [ violated ], and that of [ the kind of divorce termed ] ظِهَار, and of unintentional homicide; (T, TA;) an expiation (مَا كُفِّرَ بِهِ), such as an alms-giving, and a fasting, and the like: (K:) pl. كَفَّارَاتٌ. (T, TA.)