adjective - working secretly, especially as a police officer trying to get information without people knowing who you really are
noun - the place where a crime happened and where the police look for clues and evidence
noun - a male reproductive cell that can join with a female egg to create a new life
noun - an animal or human in the early stages of development before birth, especially before all the main body parts are formed
noun - an organ that develops in the uterus during pregnancy to provide oxygen and nutrients to the developing baby and remove waste products from the baby's blood
adjective - not allowed or not suitable to do something or receive something, especially by law or by rules
noun - the state of having knowledge or understanding, or the process of giving someone this knowledge or understanding
noun - a person who publicly expresses expert opinions or commentary on a particular subject, especially in the media
noun - a shared basis of understanding or mutual interests; an area of agreement between parties
adjective, formal - not candid or sincere, often pretending ignorance; giving a false appearance of frankness
adjective, formal - showing innocent or childlike honesty and openness; candid, unsuspecting