Definitions by anaptyxi

:] 

in texting, a grimace. just as :D is thought of as laughing, :) as a smile, and :( as a frown.
otherwise, it means ]

"they scraped their knee? :]"
then, you may proceed to ping your friend who disagrees with this definition and confirm, ':]' is a grimace

:] by anaptyxi March 19, 2021