'Loathsome' in the Bible

And since they did not see fit to acknowledge God or consider Him worth knowing [as their Creator], God gave them over to a depraved mind, to do things which are improper and repulsive,

They profess to know God [to recognize and be acquainted with Him], but by their actions they deny and disown Him. They are detestable and disobedient and worthless for good work of any kind.

And I saw three loathsome spirits like frogs, leaping from the mouth of the dragon (Satan) and from the mouth of the beast (Antichrist, dictator) and from the mouth of the false prophet;

And he shouted with a mighty voice, saying, “Fallen, fallen [certainly to be destroyed] is Babylon the great! She has become a dwelling place for demons, a dungeon haunted by every unclean spirit, and a prison for every unclean and loathsome bird.