an obsessed person is somebody who only thinks of one thing and does it all the time
Hydromaniac
lexicologist.
A guy.
Racist
Morbid.
The correct medical term for someone exercise obsessed is 'physically attractive'.
A gleek is a person obsessed with Glee.
The term "draconic hobbyist" or "dracophile" is sometimes used informally to describe individuals who are intensely interested in dragons. However, there is no specific scientific name for this type of obsession.
Yes, a person will become obsessed with it over time.
A person who is extremely obsessed with one object, but otherwise sane.
The spelling obsessionist to mean an obsessed person is not formal English.The correct adjective form is obsessional or obsessed.
A bibliomaniac is a person who is obsessed with owning valuable books.