freak has definitions from the field of biology
1
[ noun ] (biology) a person or animal that is markedly unusual or deformed

Used in print

(Clifford H. Pope, The Giant Snakes....)

He reasons that as anacondas 30 feet long are often found , some might be 38 , and occasional `` monstrous freaks '' over 50 .

Thus , his estimate lies between Oliver 's suggestion of at_least 37 feet and the 50 - foot `` monstrous freaks '' intimated by Heuvelmans .

(Hampton Stone, The Man Who Looked Death...)

The man was just this side of being a freak .

(Whit Masterson, Evil Come, Evil Go....)

Twenty-four_hours had changed him from a performer to a freak .

Related terms

mutant leviathan

2
[ noun ] someone who is so ardently devoted to something that it resembles an addiction

Synonyms

junkie junky nut addict

Examples

"a golf addict" "a car nut" "a control freak"

Related terms

enthusiast gym_rat addict

3
[ verb ] lose one's nerve

Examples

"When he saw the accident, he freaked out"

Related terms

panic

*