ex radical, n.Definitions

The Ex-radical (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠a favorite establishment expert: a repentant sinner whose earlier work was ignored or mocked becomes an authority the moment he sees the light.