| Answer | Crossword Clue |
|---|---|
| DIRE | Extremely serious |
| SOLEMN | Extremely serious |
| SOMBER | Extremely serious |
| ultraserious | extremely serious |
| gravest | GRAVE, extremely serious |
| gravely | GRAVE, extremely serious |
| terrible | Extremely and shockingly or distressingly bad or serious |
| grave | to engrave (to carve a design upon) / extremely serious |
| intensest | (of a person) Feeling, or apt to feel, strong emotion; extremely earnest or serious |
