The term 'not saying much' can be summarized by two words: LACONIC and TERSE. LACONIC is an adjective meaning using few words, often to the point of being abrupt or mysterious. It comes from the ancient Greek region of Laconia, where people were known for their brevity in speech. Terseness is another adjective meaning using few words, but with a more direct and concise manner. It is often used to describe someone who speaks in a straightforward and to-the-point manner.