There are situations when I get in doubt about the usage of a word, even after having used it for long and on a regular basis. One of those words is "foible". I thought it to be related to character or idiosyncrasy or attitude untill I saw it's real definition today in Oxford dictionary. I casually used to say "hey, I don't appreciate such foible" or "I approve of such foible". Now I know that it might have conveyed the meaning to others and seemed appropriate to me but I have been wrong all that time. I need to know if this word matters that much in everyday usage if, the audience were fastidious about proper language and if they were not.
Another question that exhumes out is that whether I should use it as a synonym for weakness or character.
Also, in what way will writing or saying, " I appreciate such foible" be understood? Will the reader or listener think that I like the weakness or flaw in his character or I'm just being sarcastic about it or any other thoughts?