A transninja is a person that is transgender, but you would never know it unless told.

Someone who used to be a potential girlfriend/boyfriend, but no longer is.

A transninja is someone who perfectly imitates the opposite sex to fool or fully become one with the sex. Some transninjas cover it up so well you wouldn’t be able to even no they were trans. Most transninjas hide their birth sex from their partners allowing them to believe that that is who they were.

Shortened word for transgender ninja