An archaic or obsolete term that may refer to falsehood, deception, or failure; the exact meaning is unclear due to its rarity.
Possibly related to Old French 'faillance' meaning failure or fault, or connected to 'faille' (a fabric). The word appears only in historical texts with inconsistent usage.
This word is virtually extinct in modern English—it only shows up in Middle English texts, and even then, scholars aren't entirely sure what it meant because it was used so inconsistently!
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