Thalidomide is an infamous teratogen. Women can be exposed to this substance while trying to control nausea during pregnancy. Thalidomide was given (mostly in the late fifties) as a medication to control the nausea (it was removed from the market in 1961). Thalidomide causes severe malformation risks to a developing fetus.
adjective. The definition of naive is being immature, unaware or overly trusting. An example of naive is someone who believes that the moon is made of cheese because their mother said it was.
naive No one likes being called naive, since it means you lack sophistication or street smarts. A person who is too trusting can be criticized for being overly naive: You're so naive, you think that e-mail from the Nigerian prince is really going to make you a million dollars! Naive shares the same root as native, and originally meant natural or not artificial. It can still be used in a more positive meaning when describing a charming lack of artificiality, as in the naive style of folk art made by an untrained painter.