sup

what's up?

Online jargon, also known as text message shorthand, used primarily in texting, online chat, instant messaging, email, blogs, and newsgroup postings, it is spelled in all lowercase because it's also considered a form of leetspeak.

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See also : U Up  acronym  cyberslang  leetspeak  shorthand  
NetLingo Classification: Acronyms and Text Message

Updates
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