SMTH means 'something'. Dictionary.com says SMTH is short for something and is one of many words shortened from texting, like brb for be right back and ty for thank you. Wiktionary also notes that smth appears in some dictionaries, especially foreign-language ones aimed at Russian speakers, as a shorthand for 'something'.
SMTH is one of the plainest abbreviations around. It doesn't hide a joke or a mood. It's just 'something' with the vowels taken out. But it has an unexpected second life in language learning books and bilingual dictionaries. Here's how it's used in both places.
Something, minus a few letters
Dictionary.com's informal summary is direct: SMTH is short for something. It groups it with other words shortened from texting, comparing it to brb for 'be right back' and ty for 'thank you'. Wiktionary lists smth as a pronoun and an abbreviation of something, with sth and sthg as synonyms.
Wiktionary's citation comes from a 2024 Cosmopolitan fashion piece about what to wear to a pop concert, which shows the abbreviation has moved well beyond private texts into mainstream writing.
The dictionary shorthand
Here's the part most people don't know. Wiktionary's usage note says smth is sometimes used as a variation of sth in certain dictionaries, especially foreign-language dictionaries, and largely Russian ones. If you've ever looked up a phrase like 'consider smth' or 'remind smb of smth' in a bilingual dictionary, that's where the abbreviation comes from.
In that world, smth stands for any object that fits the slot in a phrase. Wiktionary's sth entry lists sth., sthg and smth as alternative forms of the same shorthand. So if you learned English through a Russian-English dictionary, smth may feel like dictionary language rather than texting slang.
| Form | Where you'll see it | Means |
|---|---|---|
| smth | Texts, chats, Russian-English dictionaries | Something |
| sth | Dictionary entries and notes | Something |
| sth. | The same, with a full stop | Something |
| sthg | A longer variant Wiktionary lists | Something |
How people use SMTH in texts
In chats, smth behaves exactly like the full word. It fills in for an unnamed thing, idea or plan. You'll see it most in fast, casual messages where people want to keep typing short.
These are made-up texts to show smth in use, not real chats:
- 'Want to grab smth to eat?' An open invitation.
- 'I need to tell you smth.' The message that makes everyone nervous.
- 'Smth came up, can we move it to Thursday?' A polite reschedule.
- 'Is smth wrong?' A gentle check-in.
That second example is worth a note. 'I need to tell you smth' with nothing after it can cause real worry, because the reader's mind fills the gap. If it's good news or something small, say so: 'I need to tell you smth, don't worry, it's good!'
SMTH vs SMH and other lookalikes
SMTH is easy to confuse with SMH, 'shaking my head', which shows disapproval. One extra letter changes the meaning completely. 'That's smth' could mean 'that's quite something', while 'that's smh' makes no sense at all. If a message reads oddly, check whether you've misread one for the other.
There's also the British habit of saying 'that's something' to mean 'that's impressive' or 'that's surprising'. In text, 'that's smth' can carry the same feeling, especially with an emoji or exclamation mark.
When to spell it out
SMTH is fine in personal chats and quick team messages. In anything formal, I'd write the full word. In an email to a client, 'I'll send smth over later' looks rushed, while 'I'll send the draft over this afternoon' is clearer and sounds more professional.
That's a good rule for most abbreviations. If the full word is short and the message matters, spell it out. If the message is casual and the reader knows you, shorthand saves time without losing anything. If you work to deadlines, my guide to EOD covers another abbreviation that's common in work chats.
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Why short forms like SMTH last
Shortened words like smth stick around because they're obvious. You don't need to learn them; you can work them out from the letters. That's very different from slang that depends on a meme or a community. Smth will probably keep turning up in texts, comments and reference books for a long time, because it does one simple job well.
It's also part of a long tradition. Note-takers, telegram writers and dictionary editors have always cut letters to save space. Texting just made that habit visible to everyone. Smth, sth and their cousins are the same idea, used by very different groups for the same practical reason.
Typing SMTH on different keyboards
Some phone keyboards try to autocorrect smth into a real word, which is one reason people sometimes see odd messages. If your keyboard keeps changing it, you can add smth to your personal dictionary so it stays as typed. On a computer, it'll usually go through untouched.
It's also worth knowing that smth isn't the only short form. Some people write 'sth', the version Wiktionary lists as a synonym, and others write 'somethin'. They all mean the same, and readers will understand any of them in a casual chat.
A good rule of thumb: if the reader might stop and wonder what you meant, write the word in full. Saving five letters is never worth a confused reply. In fast chats with friends, though, smth is clear enough that nobody will blink.
SMTH in social posts and captions
In captions, smth gives a relaxed, chatty feel. 'Working on smth new 👀' is a common teaser for a launch, and it works because it builds a little curiosity without giving anything away. If you use it that way, make sure you follow up. A teaser with no reveal can leave followers feeling teased in the wrong way.
Frequently asked questions
What does SMTH mean in a text?
It means 'something'. Dictionary.com says it's one of many words shortened from texting.
Is SMTH the same as STH?
Yes. Wiktionary lists sth and sthg as synonyms of smth.
Why do dictionaries use smth?
Wiktionary says it's used in some foreign-language dictionaries, largely Russian ones, as shorthand for something.
What's the difference between SMTH and SMH?
SMTH means something. SMH means shaking my head.
Is it ok to use SMTH at work?
In quick chats, yes. In client emails, spell it out.
