You searched for: “more portentous
portentous (adjectives), more portentous, most portentous
1. That which gives a sign or a warning that something which is usually undesirable or bad is going to happen rather soon: "She had a portentous dream that she was going to slip and fall down on an icy sidewalk and break her arm."
2. Arousing awe or amazement or trying to seem important, serious, or impressive: "The politician spoke in a portentous tone about the future of his country."