- of, having the nature of, or characteristic of murder; brutal: a murderous act
- capable or guilty of, or intending, murder
- Informal very difficult, disagreeable, dangerous, trying, etc.
- Capable of, guilty of, or intending murder: a group of murderous thugs.
- Characteristic of or giving rise to murder or bloodshed: murderous mistrust.
- Informal Capable of devastating or overwhelming: a murderous exam.