The phrase "obscene words" refers to offensive, vulgar, or inappropriate language that is considered indecent or inappropriate in social situations. These are words that are disrespectful, crude, or sexually explicit. Full definition
SWEARING IN A cognitive scientist's new book examines the nature of profanity and the implications of obscene words for understanding human brains and minds. (sciencenews.org)
I don't think I have embarrassed many people or distressed them by what I've said other than by the impact of certain obscene words that soldiers use. (religion-online.org)