adjective graver, gravest
- requiring serious thought; important; weighty: grave doubts
- not light or trifling in nature or in consequence; grievous: a grave sin
- seriously threatening health, well-being, or life; critical; dangerous: a grave illness
- seriously contrary to what is right or desirable; extremely bad: a grave fault
- Theol. so evil as to cause spiritual death; mortal: a grave sin
- dignified and solemn or sedate in manner or mien
- somber; dull: grave colors
- low or deep in pitch