SI

What Does SI Mean in a Text?

The Quick Answer

SI means "Stop It!", "Stupid Idiot," and "Similar Interests."

Stop It!

The abbreviation SI is typically used with the meaning "Stop It!" as a direct request or order to someone to stop doing something. In this context, SI often expresses amused disbelief.

Stupid Idiot

When used with the meaning "Stupid Idiot," the abbreviation SI is typically used as an insult, either directly or when referring to a third party.

Similar Interests

SI is often used on online dating sites to indicate that a user is looking for someone with "Similar Interests."

Image for SI

When I write SI, I mean this:

SI also means "Stupid Idiot" and "Similar Interests."

Summary of Key Points

We have summarized the key points in the table below:

SI
Definition:	Stop It!
Type:	Abbreviation
Guessability:	2: Quite easy to guess
Typical Users:	Adults and Teenagers

Second Definition for SI

This meaning was also noted:

SI
Definition:	Stupid Idiot
Type:	Abbreviation
Guessability:	2: Quite easy to guess
Typical Users:	Adults and Teenagers

Third Definition for SI

SI also means "Similar Interests." This is the most common definition for SI on online dating sites, such as Craigslist, Tinder, Zoosk and Match.com, as well as in text messages and on adult chat forums:

SM
Definition:	Similar Interests
Type:	Abbreviation
Guessability:	3: Guessable
Typical Users:	Adults

Examples of SI in Sentences

Here are examples of SI in conversations:

• Sheila: So I told him where to stick his job!
• Jenny: SI! You never did!
(Here, SI means "Stop It" and expresses amused disbelief.)

• Ricky: I got a parking fine when I was in the office paying my parking fine.
• Sarah: SI! You never learn.
(Here, SI means "Stupid Idiot.")

• Rupert: I like pina coladas and getting caught in the rain.
• Steph: We have SI! Write to me and escape.
(Here, SI means "Similar Interests.")

An Academic Look at SI

SI is an acronym (i.e., an abbreviation spoken like a word). However, it is not normally used in speech. SI is an abbreviation typically used for efficiency in text-based messaging rather than for efficiency in oral communication. Acronyms differ from initialism abbreviations, which are pronounced using their individual letters.

What Did We Say before Texting and Social Media?

Before the digital era, we would have just said something like "Stop It," "Stupid Idiot," or "Similar Interests" instead of using the abbreviation SI.

Example of SI Used in a Text

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