Any language that degrades or slanders the character, religion, sex, color, or ethnic background of someone.
To dream of profanity, denotes that you will cultivate those traits which render you coarse and unfeeling toward your fellow man. To dream that others use profanity, is a sign that you will be injured in some way, and probably insulted also.
A profanity (or bad word, swear word, curse word, cuss word, dirty word, or collectively foul, bad or strong language) under current colloquial use is a word, expression, gesture, or other usage which is socially constructed as insulting, rude or vulgar. The extent to which a profanity is considered to be in some way disagreeable or objectionable depends on context, timing and various other factors. However, the use of certain profanities at certain times, especially in a public setting or during a solemn occasion, may always be considered inappropriate or in bad taste, if not outright abusive, obscene or offensive.