initialism🔤 abbreviation
OMG
oh my God
What it means
OMG stands for 'oh my God' (or 'oh my gosh'). It expresses surprise, shock, excitement, or disbelief. Tone does the heavy lifting — the same three letters can show delight, horror, or exasperation depending on context.
Words like “OMG” are exactly the kind of vocabulary our English vocabulary size test measures — find out how many English words you know.
Examples
- OMG, I can't believe you're here!
- Omg that exam was so hard.
- OMG no way, when did that happen?
- She read the text and just whispered 'omg.'
Where it comes from
An initialism that appears in writing as far back as a 1917 letter, long before texting, then became ubiquitous online and in casual speech.
Related abbreviations
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