No1
no1 definition by Slang.net - The Slang Dictionary
This page explains what the abbreviation "no1" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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No1 is a common abbreviation that means "no one." No1 knows who originally created this abbreviation, and for the most part, no1 cares.
No1 is similar to ne1, and it can sometimes be mistaken for "No. 1." Context will likely tell you whether you're no one or number one in your conversational partner's heart.