untalkative; quiet; taciturn; reticent; uncommunicative
寡黙な父が初めて心情を語った夜だった。
It was the night my taciturn father spoke of his feelings for the first time.
寡黙でありながら行動で信頼を勝ち取った。
Though quiet, he won trust through his actions.
寡黙な人ほど発する言葉に重みがある。
The more taciturn a person, the more weight their words carry.