If they fire, Watson, have no compunction about shooting them down.
I struck him down with no more compunction than if he had been some foul and venomous beast.
I do not know whether he was seized with compunction at that moment for the part he was playing, but I know that I never felt more heartily ashamed of myself in my life than when I saw the beautiful creature against whom I was conspiring, or the grace and kindliness with which she waited upon the injured man.
There are no more uses of "compunction" in the book.
Show samples from other sources
While most developed nations recognize the embargo, China ignores it without compunction.
Stop up the access and passage to remorse, That no compunctious visitings of nature Shake my fell purpose