You could perhaps doublespend it to yourself. What wallet are you using?
– MurchJun 07 '17 at 21:34
Multibit HD. There is no double spending option there. I've tried reinstalling the wallet in a new computer, reseting, repairing, everything you can imagine. That stupid wallet always fetches that unconfirmed transaction from the network. Don't know how to double spend it....
– PedroDJun 07 '17 at 21:40
There is no way to cancel an unconfirmed transaction, and it has already been asked here. Flagging to close.
– markasoftwareJun 08 '17 at 01:51