Radical

(used of opinions and actions) far beyond the norm

Similar to

Immoderate

Examples

Radical opinions on education

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

Synonyms

Basal

In category

Phytology

Botany

Antonyms

Cauline

Examples

Radical leaves

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

Synonyms

Free radical

Type of

Atom

Examples

In the body free radicals are high-energy particles that ricochet wildly and damage cells

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

Markedly new or introducing radical change

Synonyms

Revolutionary

Similar to

New

Examples

Radical political views

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

A character conveying the lexical meaning of a logogram

A person who has radical ideas or opinions

Arising from or going to the root or source

Similar to

Basic

Examples

A radical flaw in the plan

(mathematics) a quantity expressed as the root of another quantity

Of or relating to or constituting a linguistic root

In category

Linguistics

Pertains to

Root

Examples

A radical verb form