a very unusual and unexpected event or situation.
the teacher says the accident was a total freak
a person, animal, or plant with an unusual physical abnormality.
He was foaled in Indiana, was a mere freak of nature , and withal a very curious looking animal.
a person who is obsessed with or unusually enthusiastic about a specified interest.
a fitness freak
a sudden arbitrary change of mind; a whim.
follow this way or that, as the freak takes you