foible
definition
a minor weakness or eccentricity in someone's character
example
Despite his many strengths, his tendency to obsess over small details is a charming foible that his friends have come to accept.
synonyms
weaknesseccentricityquirk
word origin — The word 'foible' comes from the French word 'foible,' which means 'weak.' It originally referred to the weaker part of a sword blade, and later came to denote minor weaknesses in character.