The term 'not secret' can be defined by the following crossword solutions: SEEN (4 letters), OPEN (4 letters), KNOWN (5 letters), OVERT (5 letters), BRIEFING (8 letters), wellknown (9 letters), PROCLAMATION (12 letters), and COMPREHENSIBLE (14 letters). These words all refer to something that is not hidden or kept private, but rather is visible, public, and easily understood. SEEN and OPEN refer to something that is visible, while KNOWN and wellknown refer to something that is widely recognized. OVERT and BRIEFING refer to something that is done in a public manner, and PROCLAMATION and COMPREHENSIBLE refer to something that is easily understood. All of these words together describe something that is not secret.