a police officer whose job is to investigate a crime

investigator of crime

a person who feels hatred and tries or wishes to harm or attack

someone hated or competed against

a person who pretends to be virtuous or good

person who pretends, is deceitful

a cold-blooded animal that lays eggs, e.g. a lizard, tortoise, crocodile, snake

person who is very dishonest

a person who deceives in a cowardly way; to move quietly and secretly in order to deceive

person who is very dishonest

a person who tries to set secret information, especially about military affairs of other countries; a person who keeps a secret watch on the movements of others

person who secretly finds out about another's business

a person who betrays a friend, is disloyal to his country etc

person who is disloyal

a person who leaves one group and joins another

traitor

a kind of small, fierce animal with red-brown fur

sneak