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1. sinnage
defining a male pretending to be a female.

-Founded by the CTF Infantry Community
Lovegirl pulled a sinnage to get cyber laid.
2. sinnage
A cross-dresser. Also posts pictures of fake girls to pretend they are a man, and talks in a high falsetto on vent (if you can even get them on).
Dude, Sinnage is a man.
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