foible

fault, failing, frailty, foible, vice mean an imperfection or weakness of character. fault implies a failure, not necessarily culpable, to reach some standard of perfection in disposition, action, or habit <a writer of many virtues and few faults>. failing suggests a minor shortcoming in character <being late is a failing of mine>. frailty implies a general or chronic proneness to yield to temptation <human frailties>. foible applies to a harmless or endearing weakness or idiosyncrasy <an eccentric's charming foibles>. vice can be a general term for any imperfection or weakness, but it often suggests violation of a moral code or the giving of offense to the moral sensibilities of others <compulsive gambling was his vice>.