Backslide
Easton’s Bible Dictionary & Webster’s 1828 Dictionary · Matthew George Easton, Noah Webster
Backslide - (Easton's Bible Dictionary)
To draw back or apostatize in matters of religion (Acts 21:21; 2 Thess. 2:3; 1 Tim. 4:1). This may be either partial (Prov. 14:14) or complete (Heb. 6:4-6; 10:38, 39). The apostasy may be both doctrinal and moral.
In other dictionaries
Read “Backslide” in the 2 dictionariesSource of the article
Matthew George Easton, Easton’s Bible Dictionary; Noah Webster, American Dictionary of the English Language (1828)
Bible Strong combined digital edition