The term 'secret' can be defined as something that is kept hidden or not revealed to others. Crossword solutions for the term 'secret' include 'ANONYMOUS' (9 letters), 'DEEP' (4 letters), 'PROBLEM' (7 letters), 'CODE' (4 letters), 'PRETERNATURAL' (13 letters), 'TOP' (3 letters), 'TRADE' (5 letters), 'coded' (5 letters), 'INNER' (5 letters), 'PRIVY' (5 letters), 'ARCANE' (6 letters), 'CLOSET' (6 letters), 'COVERT' (6 letters), 'INWARD' (6 letters), 'OCCULT' (6 letters), 'UNTOLD' (6 letters), 'ADMIRER' (7 letters), 'epoptic' (7 letters), 'ESOTERIC' (8 letters), 'hushhush' (8 letters), 'VICTORIA' (8 letters), 'ENCIPHERED' (10 letters), and 'UNDERCOVER' (10 letters). These words all have to do with keeping something hidden, either from the public or from a select few. They can also refer to a CODE or language that is only known by a certain group of people.