An ad hominem (Latin for "to the man" or "to the person"), short for argumentum ad hominem, is an attack on an argument made by attacking the character, motive, or other attribute of the person making the argument, rather than attacking the argument directly. When used inappropriately, it is a logical fallacy in which a claim or argument is dismissed on the basis of some irrelevant fact or supposition about the author or the person being criticized. Ad hominem reasoning is not always fallacious, for example, when it relates to the credibility of statements of fact or when used in certain kinds of moral and practical reasoning.