Concise to the point of sounding curt or stoic.
“He didn’t say much, and I couldn’t really tell what he wanted. He was laconic, dressed in a red tunic with a 9-foot swear-to-god spear and bronze shield. So I sidled out of the condiments aisle, abandoning the vinaigrette I’d been stocking.”
(Note: Laconic comes from the ancient Greek territory of Laconia, of which Sparta was the capital. Apparently the Spartans were known for being terse.)