Cancellable vs. Cancelable — What's the Difference?

Which can be cancelled.

To annul or invalidate

To decide or announce that (a planned or scheduled event) will not take place, especially with no intention of holding it at a later time

To cross out with lines or other markings.

To mark or perforate (a postage stamp or check, for example) to indicate that it may not be used again.

To neutralize or equalize; offset

To remove (a common factor) from the numerator and denominator of a fractional expression.

To remove (a common factor or term) from both sides of an equation or inequality.

To neutralize one another; counterbalance

The act or an instance of canceling; a cancellation.

(US) cancellable