[Serious] What Makes Space Terrifying?

Serious, grave, solemn, sedate, staid, sober, earnest mean not light or frivolous. Serious implies a concern for what really matters. Please don't laugh - i'm being serious.

He was wearing a very serious expression and i knew something was wrong. On the surface it's a very funny novel but it does have a more serious underlying theme. See examples of serious used in a sentence.

Serious synonyms, serious pronunciation, serious translation, english dictionary definition of serious. He became serious when he.