Outspoken: frank in stating one's opinions, especially if they are shocking or controversial. to be direct and open in speech and expression. 

synonyms: forthright · direct · candid · frank · straightforward · honest · open · straight · straight from the shoulder · plain · plain-spoken · vociferous · vocal · explicit · point-blank ·

 taciturn: (of a person) reserved or uncommunicative in speech; saying little.

"after such gatherings she would be taciturn and morose"

synonyms: untalkative · uncommunicative · reticent · unforthcoming · quiet · unresponsive · secretive · silent · tight-lipped · close-mouthed · mute · dumb · inarticulate · reserved