Adjective
1. dignified and somber in manner or character and committed to keeping promises;
"a grave God-fearing man""a quiet sedate nature""as sober as a judge""a solemn promise""the judge was solemn as he pronounced sentence"2. characterized by a firm and humorless belief in the validity of your opinions;
"both sides were deeply in earnest, even passionate""an entirely sincere and cruel tyrant""a film with a solemn social message"