The term 'not so much' can be expressed in two ways: 'LESS' (4 letters) and 'to a lesser extent' (15 letters). The phrase 'not so much' is used to indicate that something is not as great or important as it could be. It is often used to express a lack of enthusiasm or interest in something. For example, if someone asked you if you wanted to go to the movies, you might reply 'not so much'. This would indicate that you are not particularly interested in going to the movies.