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1. Dictionary

   Rad·i·cal

   /ˈradək(ə)l/

   

   adjective

   • 1. (especially of change or action) relating to or affecting the fundamental nature of something; far-reaching or thorough: "a radical overhaul of the existing regulatory framework" Similar thoroughgoingthoroughcompletetotalentireabsoluteuttercomprehensiveexhaustiveroot-and-branchsweepingfar-reachingwide-rangingextensiveprofounddrasticsevereseriousmajordesperatestringentviolentforcefulrigorousdraconianOpposite superficial
   • ▪ forming an inherent or fundamental part of the nature of someone or something: "the assumption of radical differences between the mental attributes of literate and nonliterate peoples" Similar fundamentalbasicessentialquintessentialinherentinnatestructuraldeep-seatedintrinsicorganicconstitutiverootOpposite minor
   • ▪ (of surgery or medical treatment) thorough and intended to be completely curative.
   • 2. advocating or based on thorough or complete political or social change; representing or supporting an extreme or progressive section of a political party: "a radical activist" Similar revolutionaryprogressivereformingreformistprogressivistrevisionistleftistleft-wingsocialistanticapitalistextremistfanaticalmilitantdiehardinformal:wokeright-oninformal, derogatory:commieBolshevikleftyredpinkbolshieOpposite conservativereactionarymoderate
   • ▪ characterized by independence of or departure from tradition; innovative or unorthodox: "the daring, avant-garde spirit of the music was too radical for the conservative audience"
   • 3. denoting or relating to the roots of a word.
   • ▪ belonging to the root of a chord.
   • 4. of the root of a number or quantity.
   • 5. of, or springing direct from, the root or stem base of a plant.
   • 6. very good; excellent: informal North American "Okay, then. Seven o'clock. Radical!"

   noun

   • 1. a person who advocates thorough or complete political or social reform; a member of a political party or part of a party pursuing such aims.
   • 2. a group of atoms behaving as a unit in a number of compounds.
   • 3. the root or base form of a word.
   • ▪ any of the basic set of 214 Chinese characters constituting semantically or functionally significant elements in the composition of other characters and used as a means of classifying characters in dictionaries.
   • 4. a quantity forming or expressed as the root of another.
   • ▪ a radical sign.

   Word Origin late Middle English (in the senses ‘forming the root’ and ‘inherent’): from late Latin radicalis, from Latin radix, radic- ‘root’.

   Derivatives

   • 1. radicalness noun

   Scrabble Points: 10

   • R

     1

   • A

     1

   • D

     2

   • I

     1

   • C

     3

   • A

     1

   • L

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2. www.merriam-webster.com › dictionary › radicalRadical Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › radical

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   Learn the origin, synonyms, examples, and usage of the word radical as an adjective and a noun. Find out how radical can mean a root, a principle, an extreme, a political activist, or a mathematical expression.

3. www.dictionary.com › browse › radicalRADICAL Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › radical

   • Cached

   Radical definition: of or going to the root or origin; fundamental. See examples of RADICAL used in a sentence.

4. dictionary.cambridge.org › dictionary › englishRADICAL | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   Learn the meaning of radical as an adjective, noun, and medical term. Find out how to use radical in sentences and phrases related to social, political, or economic change, or surgery.

5. www.vocabulary.com › dictionary › radicalRadical - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › radical

   If something is considered extremist or very different from anything that has come before it, call it radical.

6. dictionary.cambridge.org › learner-english › radicalRADICAL | meaning - Cambridge Learner's Dictionary

   dictionary.cambridge.org › learner-english › radical

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   Learn the meaning of radical as an adjective and a noun, and how to use it in different contexts. Find out the synonyms, antonyms, and translations of radical in other languages.

7. Videos

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8. www.thefreedictionary.com › radicalRadical - definition of radical by The Free Dictionary

   www.thefreedictionary.com › radical

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   Radical can mean a root, a group of atoms, a slang term, or a political activist. Learn the different meanings and usage of radical in various contexts with examples and synonyms.

9. www.dictionary.com › browse › radicals&RADICAL Definition & Usage Examples | Dictionary.com

   www.dictionary.com › browse › radicals&

   • Cached

   Radical definition: of or going to the root or origin; fundamental. See examples of RADICAL used in a sentence.