The term 'not so great' can be described in a variety of ways, such as MEH (3 letters), LESSER (6 letters), LESS (4 letters), WORSE (5 letters), and BLAH (4 letters). MEH is an expression of indifference or apathy, while LESSER implies something is not as good as it could be. LESS indicates that something is not as much as it should be, WORSE suggests that something is not as good as it was before, and BLAH implies that something is dull or uninteresting. All of these words describe the term 'not so great' in different ways, but they all convey the same meaning.