GoKawiilResearcher reverse-engineers Apple's hidden profanity-tagging system
A developer investigated macOS's ~/Library/Keyboard/VulgarWordUsage.db, which logs swear-word usage per app and recipient to help autocorrect adapt, and found it empty on their own Mac. Digging further, they used undocumented private functions from Apple's Lexicon.framework to extract the underlying system dictionary, which tags every word with a vulgarity tier (vulgar, offensive, sensitive) and up to eleven topic categories like sex, drugs, religion and politics, publishing full word dumps for 15 languages.