An example of a sentence that uses the word "outspoken" appropriately is: "David was usually outspoken; he rarely kept his opinions about others to himself." Another example is: "He had been fired from several jobs, primarily because he was so outspoken."
The word "outspoken" is typically used as an adjective to describe a person who does not often hold back their opinion. The word can also be used as a verb to express the past participle of "outspeak", but this usage is far less common.
Some synonyms for "outspoken" are "frank", "candid" and "bold". Derivatives of "outspoken" include the adverb "outspokenly" and the noun "outspokenness."