shan't
uk/ʃɑːnt/us/ʃænt/old-fashioned in US short form of shall not:
I shan't be able to come to your party.
"Pick those books up immediately." "Shan't (= I refuse to)!"
More examples
- I shan't be long.
- I shan't tell her.
- I shan't miss her at all.
- I was invited but I shan't be going.
- I shan't stay long.