disapproval If you describe someone as feckless, you mean that they lack determination or strength, and are unable to do anything properly. He regarded the young man as feckless and irresponsible. = incompetent. lacking determination, and not achieving anything in your life (feck , from effect)
generally incompetent and ineffectual; "feckless attempts to repair the plumbing"; "inept handling of the account" not fit to assume responsibility