Is Idle Talk Haram Or Makrooh
In general it could be considered as disliked, however, if it has any aspect of polytheism or immorality as per Quran verse 7:33 then it could also be considered as haram. For details about immortality please see: Discussion 42832 With that said, once we know that something is not liked by God then we should abstain from it regardless of whichever category it falls under.