The term 'not clear' can be described in many ways, including 'DIM' (3 letters), 'HAZY' (4 letters), 'FILMY' (5 letters), 'FOGGY' (5 letters), 'MUDDY' (5 letters), 'VAGUE' (5 letters), 'OPAQUE' (6 letters), 'CLOGGED' (7 letters), 'indoubt' (7 letters), 'OBSCURE' (7 letters), 'OVERCAST' (8 letters), 'INTRICATE' (9 letters), 'CONCEPTUAL' (10 letters), 'INDISCERNIBLE' (13 letters), and 'INDISTINGUISHABLE' (17 letters). These words all describe something that is not easily understood or seen, and can be used to describe a variety of situations.