SU

What Does SU Mean in a Text?

The Quick Answer

The abbreviation SU usually means either "Swipe Up" or "Shut Up."

Swipe Up

SU is widely used on messaging, dating and social media apps (such as Instagram, Snapchat and Tinder) with the meaning "Swipe Up." In this context, SU is an action that allows a user to quickly access content or functions. For example:

Nic: What do I have to do to be able to add links to my posts on IG?
Lee: Have 10,000 followers, then SU.

"Swipe Up" is also abbreviated as S/U.

Shut Up

SU is used with the meaning "Shut Up," as a blunt way to tell someone to stop talking (typing), or as an exclamation (similar to OMG (Oh My God!)). For example:

Jo: Sam asked me out on Saturday.
Ali: SU!

Image for SU

When I write SU, I mean this:

SU also means "Shut Up."

Summary of Key Points

We have summarized the key points in the table below:

SU
Definition:	Swipe Up
Type:	Abbreviation
Guessability:	2: Quite easy to guess
Typical Users:	Adults and Teenagers

Second Definition for SU

"Shut Up" is another definition for SU.

SU
Definition:	Shut Up
Type:	Abbreviation
Guessability:	3: Guessable
Typical Users:	Adults and Teenagers

An Academic Look at SU

As it is pronounced using its individual letters (i.e., "Ess Yuu"), SU is classified as an initialism abbreviation. Initialisms are different to acronyms, which are spoken like words. When used with the meaning "Shut Up," SU is typically used an interjection. Interjections are words used to express feeling or sudden emotion. They can be standalone or as part of a sentence (usually at the start). An interjection can end in an exclamation mark to express a strong feeling or emotion.