Synonym of extremely radical

basic deep-rooted fundamental profound basal bottom cardinal constitutional essential native natural organic original primary primitive deep-seated foundational inherent innate intrinsic meat-and-potatoes primal thoroughgoing underlying vital

drastic extreme extremist fanatical far-out far-reaching leftist major militant pervasive progressive revolutionary sweeping uncompromising violent entire freethinking insurgent recusant refractory advanced anarchistic complete excessive iconoclastic immoderate insubordinate insurrectionary intransigent lawless mutinous nihilistic rabid rebellious recalcitrant restive riotous seditious severe thorough ultra ultraist way out

quality excellent reliable valuable worthy good amazing awesome certified exceptional beautiful brilliant desirable divine elegant enviable exclusive exquisite extraordinary fantastic glorious illustrious impressive incredible invaluable magnificent marvellous outstanding perfect phenomenal premium sensational spectacular stunning super superb superior supreme wonderful accomplished admirable advanced applaudable attractive blue-ribbon bodacious bosting capital choice class classic commendable crowning deluxe distinguished dominant dynamite elite eminent estimable exemplary fabulous famous fancy fantastical fine first-class first-rate frontline grand great groovy heavenly high hot ideal immense incomparable laudable legit lofty lovely marvelous matchless mega meritorious mint neat nifty noble notable noted outrageous peerless phat piffing praiseworthy preeminent pre-eminent priceless prime primo prizewinning rare refined ripping select smashing sovereign special splendid stellar sterling striking stupendous sublime superlative supernal swell terrific tiptop top top-level topnotch top-notch transcendent tremendous unparalleled unreal unrivalled unrivaled unsurpassed vintage wicked account bang-up banner blue-chip boffo bonnie bonny boss brag brave brilliance bully bumper cool corking crackerjack cracking craftsmanship dandy dope down expertise fab fantabulous finish first-string five-star flair four-star gangbuster gangbusters gilt-edge gone hype incomparability jim-dandy keen mastery mean number one numero uno par excellence peachy peachy keen pre-eminence prize refinement skilfulness skill slick supremacy talent tip-top topflight topping transcendence virtuosity wizard gilt-edged high-class high-grade high-quality of high quality of the highest quality of the highest standard out-of-sight really good top-of-the-line top-of-the-range top-shelf very good world-class

fundamental basic central constitutional crucial deep deep-seated elemental elementary essential important indispensable integral intrinsic major necessary paramount principal significant structural theoretical ultimate underlying vital bottom cardinal first key organic original primary primitive requisite supporting axiological axiomatic basal bottom-line constitutive foundational grass-roots groundlaying meat-and-potatoes primordial rudimentary substratal substrative sustaining underived

visionary ambitious creative farsighted grandiose idealistic idealised idealized imaginative impracticable introspective inventive prescient quixotic romantic starry-eyed daydreaming dreaming idealist imaginary musing utopian abstracted astral chimerical delusory dreamy exalted fanciful illusory impractical in the clouds otherworldly pretentious prophetic speculative unrealistic unworkable unworldly

liberal enlightened flexible freethinking humanistic laissez-faire lenient moderate noninterventionist open-minded permissive progressive reformist tolerant avant-garde broad catholic free general humanitarian latitudinarian left libertarian rational understanding broad-minded high-minded indulgent intelligent interested loose magnanimous reasonable receiving receptive unbiased unbigoted unconventional unorthodox unprejudiced

continuous dynamic forward-looking gradual growing modern piecemeal revolutionary developing go-ahead step-by-step accelerating advancing bleeding-heart continuing enterprising escalating graduated increasing intensifying left of center ongoing onward up-and-coming up-to-date wide

sweeping across-the-board all-encompassing comprehensive exhaustive extensive far-reaching generalised generalized thorough unselective wholesale wide-ranging widespread blanket complete exaggerated full overall overdrawn overstated all-around all-embracing all-inclusive all-out bird's-eye global inclusive indiscriminate out-and-out thorough-going unqualified vast wall-to-wall whole-hog

militant aggressive assertive bellicose belligerent combative confrontational militaristic rebellious vigorous warring active fighting martial military offensive assertory combating contending contentious embattled gladiatorial in arms pugnacious pushy quarrelsome scrappy self-assertive truculent up in arms warlike warrish

ultramodern futuristic high-tech state-of-the-art ahead of its time contemporary current cutting-edge fresh latest leading-edge modernistic modish new new-fashioned nontraditional now present-day stylish today twenty-first century up-to-the-minute

anarchist subversive insurgent rebel rioting anarchistic defiant disobedient disorderly factious insubordinate mutinous riotous

drastic dire extreme forceful harsh severe desperate draconian exorbitant extravagant immoderate strong

naive optimistic

fashionable high-style mod surrealistic

nihilistic anarchic destructive existentialist negativistic pessimistic lawless unruly

absolute egregious excessive irrational remarkable sheer unreasonable unusual utter gross overkill stern downright fanatical flagrant improper imprudent inordinate intemperate nonsensical out of proportion preposterous rabid rigid strict too much unbending uncommon uncompromising unseemly zealous

big main serious chief grave heavyweight overshadowing star critical dangerous grievous influential life and death major-league meaningful weighty

groundbreaking innovative innovatory world-shattering novel cutting edge game changer just out

nonconservative anticonventional antitraditional large-minded nonconformist nonconventional nonorthodox antiestablishment

political dogmatic partisan party-political politically aware

alternative eccentric individualistic way-out

liberal-minded open cultivated experienced

ingenious artistic inspired originative innovational trailblazing deviceful formative pioneering experimental expressive fertile Promethean blue-sky

innermost most important pivotal centre center interior intermediate leading master median middle midway ruling salient umbilical axial centric centroidal equidistant focal foremost inmost inner mid middlemost midmost nuclear omphalic overriding predominant

inherent

beat head hip lead vanguard mistakenly trendy new wave underground

intensive accelerated demanding in-depth rigorous fast concentrated hard profound speeded-up thoroughgoing

bottommost base basement ground last lowermost lowest nethermost rock-bottom undermost

renegade reactionary apostate backsliding dissident outlaw recreant runaway disloyal heterodox schismatic traitorous unfaithful untraditional

brand-new innovating spearheading trendsetting

simple underdeveloped undeveloped unsophisticated animal barbarian natural radical word raw rough savage wild atavistic austere barbarous brutish childlike fierce ignorant nonliterate preliterate rude uncivilised uncivilized uncultivated uncultured undomesticated unlearned unrefined untamed untaught untrained untutored vestigial

clandestine hidden private secret secretive covert concealed hush-hush on the QT on the sly resistant resistive surreptitious unbowed undercover under wraps

front-line

milestone breakthrough historic landmark momentous

independent

extremist terrorist

hardline hard-nosed inflexible

forward-thinking

game-changing

anarchical

best greatest empyrean categorical empyreal transcendental

fringe marginal nonmainstream

ardent crazed dedicated delirious diseased enthusiastic fervent frenzied furious ill infected intense naked unwell virulent berserk bigoted bitten corybantic crazy deranged flipped foaming at the mouth frantic freaked out frenetic infuriated insane intolerant mad mad-dog narrow-minded nutty obsessed overboard poisoned raging sick sizzling smoking steamed up ultra ultraist violent

addicted fanatic fixated impassioned obsessive overenthusiastic passionate single-minded stubborn biased bugged burning contumacious credulous devoted domineering erratic feverish fiery headstrong high on impulsive incorrigible infatuated monomaniacal nuts for obstinate opinionated partial possessed prejudiced raving turned on willful

alienated armed contrary disaffected fractious recalcitrant restless treacherous turbulent uncontrollable unmanageable attacking difficult iconoclastic insurrectionary intractable refractory restive sabotaging seditious threatening treasonable ungovernable

additional crisp different green late recent replacement beginning comer crude gleaming glistening hot off the press immature neoteric newborn newfangled sparkling the latest this season's unprocessed unseasoned untouched virginal what's happening young youthful

ample comfortable eclectic expanded expansive large loose-fitting roomy spacious thick varied baggy capacious commodious dilated distended encyclopaedic encyclopedic far-ranging large-scale outspread outstretched scopic splay squat universal voluminous

considerable mammoth astonishing astounding breathtaking colossal enormous fat gigantic huge mind-blowing mind-boggling miraculous monster monumental out of this world overwhelming prodigious staggering surprising titantic utmost wondrous

accepting easygoing forgiving humane sympathetic benevolent charitable clement complaisant condoning easy on easy with excusing fair forbearing free and easy kindhearted lax long-suffering merciful patient soft sophisticated

far-out bizarre kinky offbeat outlandish bohemian hippie out in left field rad strange trendy ultamodern very unconventional weird

liberalistic

causal core latent lurking root veiled needful nitty-gritty nub

noncompliant uncooperative wayward argumentative indomitable insubmissive opposing resisting undisciplinable undisciplined untoward unwilling withstanding

complex developed future forward far ahead far along higher precocious professional well ahead well along

full-scale meticulous embracive from A to Z full-blown full-dress no stone unturned the word total

obedient

subterrestrial hypogeal hypogean hypogeous subterranean

nonjudgmental cosmopolitan dispassionate free thinking free-thinking responsive undogmatic

far out nonconformist. quirky off the wall way out

deepest

over-the-top all out out of bounds outre outré

aboriginal ancient earliest prehistoric primal primaeval primeval pristine early

irreverent sceptical skeptical nonconforming

marching to the beat of a different drummer nonadhering one's own sweet way

left-wing communist leftist Socialist

firm stringent forcible cruel hard-hitting vicious

A1 A-1 ace awesomesauce baller beaut champion crash hot hunky-dory righteous A-OK bonzer bosker brill magic spiffing supercalifragilisticexpialidocious superfine No. 1 on fleek too good to be true top-hole belting def schmick sik spanking super-duper top drawer top-drawer top-flight virtuous chillin' nang

quintessential characteristic innate staple true deep-rooted ingrained built-in deep-down hard-wired connate engrained hardwired immanent inborn inbred indigenous material native congenital

ground-breaking hi-tech updated latter-day modern-day never-before-seen new age recently developed red-hot topical up to the minute 21st-century designer newly discovered nouvelle space-age au courant

clever elaborate intricate strategic highly developed well-built well-designed well-planned well-thought-out germinal involved multifaceted

extremely rapidly extremely rare extremely regretful extremely relatable extremely reliable extremely reserved extremely quickly extremely quick extremely qualified extremely proud extremely productive extremely pressing