Synonyms for radical

noun (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

noun an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule

noun (linguistics) the form of a word after all affixes are removed

adjective (used of opinions and actions) far beyond the norm

adjective markedly new or introducing radical change

adjective arising from or going to the root or source

adjective especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem