radical
Other forms: radicals
If something is considered extremist or very different from anything that has come before it, call it radical.
The noun, radical, comes from the Latin radix "root," and in fact, radical and root are synonymous as technical terms in fields such as math and linguistics. In more everyday language, a radical is someone who has very extreme views, so you could say that their views are different from the root up. Similarly, a radical flaw or change is a fundamental one whereas a radical design or idea is very new and innovative.
Definitions of radical
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(used of opinions and actions) far beyond the norm
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markedly new or introducing radical change“radical political views”synonyms: revolutionarynewnot of long duration; having just (or relatively recently) come into being or been made or acquired or discovered
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a person who has radical ideas or opinionstypes:Bolshevik, Marxist, bolshie, bolshy, redemotionally charged terms used to refer to extreme radicals or revolutionariesextremista person who holds extreme viewsrevolutionary, revolutionist, subversive, subvertera radical supporter of political or social revolutionterrorista radical who employs terror as a political weapon; usually organizes with other terrorists in small cells; often uses religion as a cover for terrorist activitiesTrot, Trotskyist, Trotskyiteradicals who support Trotsky's theory that socialism must be established throughout the world by continuing revolutionWobblya member of the Industrial Workers of the Worldyoung Turka young radical who agitates for reformcounter-revolutionist, counterrevolutionary, counterrevolutionista revolutionary whose aim is to reverse the changes introduced by an earlier revolutionGirondin, Girondista member of the moderate republican party that was in power during the French Revolution; the Girondists were overthrown by their more radical rivals the Jacobinscyber-terrorist, cyberpunk, hackera programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorismfreedom fighter, insurgent, insurrectionist, rebela person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)Jacobina member of the radical movement that instituted the Reign of Terror during the French Revolutionsleepera spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signalsuicide bombera terrorist who blows himself up in order to kill or injure other peoplesans-culottean extreme revolutionary or republican
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a character conveying the lexical meaning of a logogram
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(linguistics) the form of a word after all affixes are removed
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of or relating to or constituting a linguistic root“a radical verb form”
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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 moleculesynonyms: free radicaltype of:atom(physics and chemistry) the smallest component of an element having the chemical properties of the element
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(chemistry) two or more atoms bound together as a single unit and forming part of a moleculesynonyms: chemical group, grouptypes:alkyl, alkyl group, alkyl radicalany of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbonsallyl, allyl group, allyl radicalthe univalent unsaturated organic radical C3H5; derived from propyleneamyla hydrocarbon radical that occurs in many organic compoundscarbonyl groupthe bivalent radical COcarboxyl, carboxyl groupthe univalent radical -COOH; present in and characteristic of organic acidschromophorethe chemical group that gives color to a moleculecyanide group, cyanide radical, cyano group, cyano radicalthe monovalent group -CN in a chemical compoundglyceryla trivalent radical derived from glycerol by removing the three hydroxyl radicalshydroxyl, hydroxyl group, hydroxyl radicalthe monovalent group -OH in such compounds as bases and some acids and alcoholsketone groupa group having the characteristic properties of ketonesbutyla hydrocarbon radical (C4H9)nitro groupthe group -NO3nitritethe radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid)acetyl, acetyl group, acetyl radical, ethanoyl group, ethanoyl radicalthe organic group of acetic acid (CH3CO-)ethyl, ethyl group, ethyl radicalthe univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atomglucosaminean amino derivative of glucose that is a component of many polysaccharidesforyml(chemistry) the negative univalent acyl radical CHO that occurs in aldehydessodium nitritenitrite used to preserve and color food especially in meat and fish products; implicated in the formation of suspected carcinogenstype of:building block, unita single undivided natural thing occurring in the composition of something else
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(mathematics) a quantity expressed as the root of another quantity
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arising from or going to the root or source“a radical flaw in the plan”synonyms:basicpertaining to or constituting a base or basis
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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
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