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STG

STG is internet slang shorthand for swear to God — used to emphasise that what you are saying is absolutely true, or to express exasperated disbelief.

Documented since 2010s2010sGen Z254 viewsLast reviewed Jun 29, 2026+ Add a definition
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Born ~2010 · no dated citations yet
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#1·Apr 28, 2026

STG is internet slang shorthand for swear to God — used to emphasise that what you are saying is absolutely true, or to express exasperated disbelief. Typed in all caps or lowercase, it functions like a verbal oath, the digital equivalent of placing a hand on your chest. Widely used in text messages, social media, and comment sections, STG adds urgency and sincerity to statements without needing a single extra word.

STG if this bus is late again I am buying a bike today.
Origin: Initialism of 'swear to God', used as a digital oath of emphasis in online communication from the early 2010s onward. Editorial expansion authored on Slangora (model-assisted, hedged).
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#2·Apr 26, 2026

(US, prisons) , a prison gang.

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