To become different.
To castrate, neuter or spay (a dog or other animal).
To change the form or structure of.
To tailor clothes to make them fit.
To affect mentally, as by psychotropic drugs or illness.
An identity or headmate of a person with dissociative identity disorder (previously known as multiple personality disorder). A member of a system.
To alter to make more suited for a different purpose.
To reuse for a different purpose, on a long-term basis, without alteration.