The Brief: STFU stands for "Shut the f**k up."

Bluesquiggle
DEEP DIVE

Synonyms: Shut up, Stop Talking

Used primarily in texting or internet messaging, STFU stands for “Shut the f**k up.” Its message can be somewhat confusing via text, because it can be said in both an aggressive or sarcastic tone.

Not to be confused with STFO, meaning “Stay the F**k out.”

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