Describing a person who is not very talkative; quiet or taciturn, often used neutrally to indicate reserve.
彼は寡黙な性格で、職場でもあまり話さない。
He is taciturn and doesn't talk much even at work.
寡黙だが仕事は非常に丁寧だと同僚に評判だ。
Although taciturn, he is reputed by colleagues for doing work very carefully.
面接では寡黙すぎると誤解されることがあるので、要点は説明した方がよい。
In interviews, being too quiet can be misunderstood, so it's better to explain key points.
子どもの頃から寡黙なタイプだった。
I've been the quiet type since childhood.