The crossword solution for the term 'LESS LIGHT' is 'SOLEMNER'. This is an adjective that means to be serious or solemn in manner or attitude. It is often used to describe a person's demeanor or behavior, as in someone who is serious and thoughtful. It can also be used to describe a situation or event, such as a funeral or a religious ceremony. In general, it implies a lack of lightheartedness or frivolity.