Thesaurus

Synonyms for Radical include:

abnormal, alkylic, all-fired, allylic, azido, azo, basal, base, basic, benzylic, bran-new, brand-new, cacodylic, carbonyl, carbonylic, carboxyl, carboxylic, chemical group, current, descriptor, dicarboxylic, elemental, elementary, exaggerated, excessive, exorbitant, extortionate, extraordinary, extreme, extremist, far, form, fresh, fundamental, grassroots, group, hot, hydroxy, immoderate, inordinate, intemperate, intense, modern, monocarboxylic, new, new-sprung, newborn, newfound, novel, outrageous, over-the-top, overdone, overstated, parvenu, parvenue, primary, radical, recent, red-hot, refreshing, revolutionary, rising, rudimentary, signifier, sinful, spic-and-span, spick-and-span, stark, steep, sunrise, trihydroxy, ultra, unconscionable, underlying, undue, unreasonable, untested, untried, unused, usurious, virgin, word form, young

radical is a ADJ.

base, chemical group, free radical, group, radical, radical sign, root, root word, stem, them, theme

radical is a NOUN.