Dream about killing a swan is unfortunately a warning alert for your mobility and adaptability to some situation. You are feeling rejected by society. You are experiencing disappointments and decline in some professional progress. Your dream means a situation that has long been dead. You are unfortunate.
Killing a swan dream unfortunately draws attention to your promise and to not let someone down. You are not being true to yourself. You are feeling overburdened from your daily problems and need an outlet to release all that tension. The dream is sadly a warning alert for an aspect of your own self that you have ignored or abandoned. Someone is not being honest or truthful about some matter.
If you dreamt about killing a swan:
Your body, which usually runs at warp speed, is telling you to slow down. You need to take a break from time to time. Eating a big bowl of caramel popcorn while watching TV won’t send you into a downward spiral from which you’ll never emerge. On the contrary, such an indulgence may leave you feeling refreshed and even giddy. Why not try it?