Radical Radical synonyms extremist radical and extremist revolutionary radical and revolutionary basic radical and basic basal radical and basal extreme radical and extreme fundamental radical and fundamental ultra radical and ultra fanatic radical and fanatic root radical and root progressive radical and progressive Full list of synonyms (1584) Radical antonyms moderate radical and moderate conservative radical and conservative superficial radical and superficial minor radical and minor reactionary radical and reactionary orthodox radical and orthodox conventional radical and conventional cauline radical and cauline peaceful radical and peaceful middle-of-the-roader radical and middle-of-the-roader Full list of antonyms (65) Share this picture Share this image Share this picture Share this image