monster

noun

1.
an imaginary creature usually having various human and animal parts
chimere fivel
2.
someone that is abnormally large and powerful
behemoth colossus giant goliath
Derived from:
monstrous
3.
a person or animal that is markedly unusual or deformed
freke freak lusus naturae monstrosity
Derived from:
monstrous
4.
5.
(medicine) a grossly malformed and usually nonviable fetus
teras
Derived from:
monstrous