taciturn

adj

Etymology: Back-formation from taciturnity, from Middle English taciturnite, from Latin taciturnitās; or alternatively from French taciturne, likely reinforced by Latin taciturnus, from tacitus (“secret, tacit”).

1. Silent; temperamentally untalkative; disinclined to speak.

   “The two sisters could hardly have been more different, one so boisterous and expressive, the other so taciturn and calm.”

   “We are each of an unsocial, taciturn disposition, unwilling to speak, unless we expect to say something that will amaze the whole room, and be handed down to posterity with all the eclat of a proverb.”