The grammatically incorrect way of saying transgender

A term used to reference cannabis/marijuana/weed.

a word that doesn't exist, that is 9 times out of 10 used by a conservative who doesn't realize that transgender is already an adjective, although sometimes used by allies who don't know the terminology either

This word is grammatically incorrect. It is used by conservatives that believe it is ok to discriminate against transgender people. The "Transgendered" are women that were born with male sex characteristics/men born with female sex characteristics (or non-binary people whose gender doesn't fit the binary). This isn't a made up story, as doctors can prove it with MRI scans.
Transgender is similar to intersex, but while for intersex people the problem is phisycal (reproductive organs partially/not functional) for the transgender person the problem is neurological.
Despite their physical attributes, trans women are women and trans men are men.

A person who defines themself by a gender other than the physical gender they were born into. I disagree with the above example because it says "he" wears feminine clothes because he is transgendered, etc. Transgendered people live their lives in what they feel is their 'real' gender, and shouldn't have to still be referred to as their birth gender if it doesn't apply to them. Being transgended does not indicate homosexuality or bisexuality in a person.

A broad term referring to any individual whose gender expression is different from their biological or genetic sex. It includes everything from a crossdresser who is happy with their birth sex to a transsexual having sexually reassignment surgery to become the opposite sex. It should be noted that being transgendered is not an indication of whether or not a person is gay.

Someone like me who defines themselves as another gender. Some get sex changes, some don't. It's nothing to be insecure over.