The definition of foible is a small character flaw.
(noun)An example of a foible is when someone always chews with their mouth open instead of closed.
See foible in Webster's New World College Dictionary
noun
Origin: obs. var. of Fr faible: see feeble
See foible in American Heritage Dictionary 4
noun
Origin:
Origin: Obsolete French foible, weak point of a sword, weak
Origin: , from Old French feble, weak; see feeble
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