The term 'not roundabout' can be summarized by three crossword solutions: terseness (5 letters), directness (6 letters), and BLUFF (5 letters). Terseness is the quality of being brief and to the point, while directness is the quality of being straightforward and not evasive. BLUFF is the act of deceiving someone by making them believe something that is not true. All three words describe a way of communicating that is not roundabout, but rather DIRECT and to the point.