To dream of a dagger represents feelings about conflict that uses serious last resort choices. A willingness to embarrass someone with nothing else ever again if all else fails to help you. Feeling good knowing you have a backup plan to permanently deal with enemies or problems.
Negatively, a dagger may reflect petty acts of jealousy at the last moment of a conflict in order to spare yourself embarrassment. “Stabbing someone in the back” to defeat them. A backup plan to permanently humiliate someone or deal with a problem.
Example: A young man dreamed of seeing a man holding . In waking life he hadn’t studied for his final exams and was considering cheating on his exams at the last moment if he felt he couldn’t pass the test honestly.