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 …

SERIOUS definition: of, showing, or characterized by deep thought. See examples of serious used in a sentence.

being in earnest; sincere; not trifling: His interest was serious. requiring thought, concentration, or application: serious reading; a serious task. weighty or important: a serious book; Marriage is a …

Jan 25, 2026 · Adjective serious (comparative more serious, superlative most serious) Without humor or expression of happiness; grave in manner or disposition.

• If you are serious about meeting your goals, telling the world in clear and certain terms will help you meet them. • The tabloids would never describe themselves as completely serious but we …

These adjectives refer to manner, appearance, disposition, or acts marked by absorption in thought, pressing concerns, or significant work. Serious implies a concern with responsibility …