My heart grieves when I hear Christians saying good and right things using sinful language of the world. It makes me distrust them.
Even when they use language slightly changed so that we will know which word they are avoiding but still sounds very much like the filth word, I recoil and stop listening.
Romans 12:2 "2 And do not be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what the will of God is, that which is good and acceptable and perfect."
There is certain language I hear Christians using that gives them away, it tells me what kind of shows they are watching and the kind of people they are spending their time with. Sadly when they need to fit in with the world it negates anything they say about God.
Our language to fit in shows a measure of arrogance and the need to be special to the world.
Proverbs 16:5
"5 Everyone who is proud in heart is an abomination to the Lord;
Be assured, he will not go unpunished."