Legitimate
Part of speech: adjective
Definition: In accordance with the law or established legal forms and requirements; lawful. Conforming to known principles, or established or accepted rules or standards; valid. Authentic, real, genuine. Lawfully begotten, i.e., born to a legally married couple. Relating to hereditary rights.
Part of speech: verb
Definition: To make legitimate, lawful, or valid; especially, to put in the position or state of a legitimate person before the law, by legal means.
Example sentence: The only legitimate use of a computer is to play games.
Established
Part of speech: verb
Definition: To make stable or firm; to confirm.
Example sentence: Creativity involves breaking out of established patterns in order to look at things in a different way.