There are 493 fourteen-letter words containing A, I, T and V, https://www.bestwordlist.com/c/a/4/14letterwordswithaitv.htm
ABORTIVENESSES ABSORPTIVENESS ABSORPTIVITIES ACCUMULATIVELY ADAPTIVENESSES
ADMINISTRATIVE ADVENTITIOUSLY ADVERTISEMENTS ADVERTIZEMENTS ADVISABILITIES
AGGRESSIVITIES ALIMENTIVENESS ALLITERATIVELY ANTEDILUVIALLY ANTICIPATIVELY
ANTICONVULSANT ANTICONVULSIVE ANTICORROSIVES ANTIDERIVATIVE ANTIEVOLUTIONS
ANTIGOVERNMENT ANTINARRATIVES ANTIREFLECTIVE ANTIRESORPTIVE ANTIRETROVIRAL
ANTISUBVERSION ANTISUBVERSIVE ANTIUNIVERSITY APPRECIATIVELY ASSAULTIVENESS
ASSEVERATINGLY ASSIMILATIVELY ASTRONAVIGATOR ATTRACTIVENESS AUGMENTATIVELY
AUTOSUGGESTIVE AVAILABILITIES AVASCULARITIES AVERRUNCATIONS AVUNCULARITIES
BEHAVIOURISTIC CIRCUMNAVIGATE CIRCUMVALLATED CIRCUMVALLATES CIVILISATIONAL
CIVILIZATIONAL CLAVICHORDISTS CLAVICYTHERIUM CLEAVABILITIES COCULTIVATIONS
COEVOLUTIONARY COGITATIVENESS COINVESTIGATOR COLLABORATIVES COMMEMORATIVES
COMPARATIVISTS CONCEIVABILITY CONGLOMERATIVE CONGLUTINATIVE CONGRATULATIVE
CONSERVATIONAL CONSERVATISING CONSERVATIVELY CONSERVATIZING CONSERVATOIRES
CONSERVATORIAL CONSERVATORIES CONSERVATORIUM CONSERVATRICES CONSERVATRIXES
CONSULTATIVELY CONTEMPLATIVES CONTINUATIVELY CONTRACEPTIVES CONTRAGESTIVES
CONTRAPOSITIVE CONTRAVENTIONS CONVENTIONALLY CONVERSATIONAL CONVERTIPLANES
CONVIVIALITIES CONVOCATIONIST CONVOLUTIONARY CORPORATIVISMS CORROBORATIVES
COUNTERVAILING CREATIVENESSES CRUCIVERBALIST CUMULATIVENESS CURATIVENESSES
CURVILINEARITY DAREDEVILTRIES DATAVEILLANCES DECORATIVENESS DELIBERATIVELY
DELIVERABILITY DEMONSTRATIVES DENOMINATIVELY DERIVATIONALLY DERIVATIONISTS
DERIVATISATION DERIVATIVENESS DERIVATIZATION DETERMINATIVES DEVALORISATION
DEVALORIZATION DEVITALISATION DEVITALIZATION DEVOTIONALISTS DEVOTIONALNESS
DISADVANTAGING DISADVENTUROUS DISAGGREGATIVE DISAPPROBATIVE DISCRIMINATIVE
DISINTEGRATIVE DISINVIGORATED DISINVIGORATES DISPENSATIVELY DISSEVERATIONS
DISSOLVABILITY DIVARICATINGLY DIVERTICULATED DORSIVENTRALLY DRIVEABILITIES
ELIMINATIVISMS ENVENOMISATION ENVENOMIZATION EQUIVOCALITIES EQUIVOCATINGLY
EVANGELISATION EVANGELIZATION EVOLUTIONARILY EXHAUSTIVENESS EXHAUSTIVITIES
EXPECTORATIVES EXPLOITATIVELY EXTRAVAGANCIES EXTRAVAGATIONS EXTRAVASATIONS
EXTRAVEHICULAR EXTRAVERSIVELY FAVORABILITIES FERMENTATIVELY FIGURATIVENESS
FREQUENTATIVES GALVANISATIONS GALVANIZATIONS GALVANOMETRIES GALVANOPLASTIC
GALVANOTROPISM GILLRAVITCHING HYPERVENTILATE ILLUSTRATIVELY IMMOVABILITIES
IMMUNOREACTIVE IMPERATIVENESS IMPERVIABILITY IMPROVISATIONS IMPROVISATORES
IMPROVISATRICE IMPROVVISATORE INACTIVENESSES INADVERTENCIES INADVISABILITY
INAPPRECIATIVE INDIVIDUALISTS INDIVIDUATIONS INEVITABLENESS INHABITIVENESS
INNOVATIONISTS INNOVATIVENESS INOBSERVATIONS INTERAVAILABLE INTERBEHAVIORS
INTERBEHAVIOUR INTERCLAVICLES INTEROPERATIVE INTERPRETATIVE INTERROGATIVES
INTERVALOMETER INTERVENTIONAL INTERVERTEBRAL INTERWEAVEMENT INTRANSITIVELY
INTRANSITIVITY INTRAVASATIONS INVESTIGATIONS INVETERATENESS INVIGORATINGLY
INVIGORATIVELY INVOLUCELLATED IRRELATIVENESS IRREMOVABILITY IRREVOCABILITY
LAEVOROTATIONS LATEROVERSIONS LAXATIVENESSES MACROEVOLUTION MANIPULATIVELY
MEDIAEVALISTIC MEDITATIVENESS METANARRATIVES MICROGRAVITIES MISADVENTURERS
MISADVENTUROUS MISADVERTENCES MISEVALUATIONS MOTIVATIONALLY MULTIPLICATIVE
MULTIVALENCIES MULTIVIBRATORS MUNDIFICATIVES NAVIGABILITIES NAVIGATIONALLY
NEGATIVENESSES NOCTIVAGATIONS NONACHIEVEMENT NONACQUISITIVE NONASSERTIVELY
NONCHAUVINISTS NONCOMMUTATIVE NONCOOPERATIVE NONCULTIVATION NONDERIVATIVES
NONEQUIVALENTS NONINTERACTIVE NONRADIOACTIVE NONRETROACTIVE NONSPECULATIVE
NONVEGETARIANS NONVOLUNTARIES NOVELISTICALLY OBJECTIVATIONS OPINIONATIVELY
OUTFANGTHIEVES OUTMANEUVERING OUTMANOEUVRING OVARIECTOMISED OVARIECTOMIZED
OVERACTIVITIES OVERADVERTISED OVERADVERTISES OVERADVERTIZED OVERADVERTIZES
OVERANALYTICAL OVERARTICULATE OVERASSERTIONS OVERATTENTIONS OVERBREATHINGS
OVERCAPACITIES OVERCAPITALISE OVERCAPITALIZE OVERCAUTIOUSLY OVERCENTRALISE
OVERCENTRALIZE OVERCOMPLICATE OVERDECORATING OVERDECORATION OVERDRAMATISED
OVERDRAMATISES OVERDRAMATIZED OVERDRAMATIZES OVEREDUCATIONS OVERENTHUSIASM
OVERESTIMATING OVERESTIMATION OVEREVALUATING OVEREVALUATION OVEREXTRACTION
OVERFASTIDIOUS OVERHARVESTING OVERINFLATIONS OVERMATURITIES OVERMEDICATING
OVERMEDICATION OVERPARTICULAR OVERPOPULATING OVERPOPULATION OVERREGULATING
OVERREGULATION OVERSATURATING OVERSATURATION OVERSTIMULATED OVERSTIMULATES
OVERVALUATIONS OVERWEATHERING PENTAVALENCIES PERCEIVABILITY PERFORMATIVELY
PERSEVERATIONS PHOTOENGRAVING PHOTOOXIDATIVE PLUVIOMETRICAL PREDESTINATIVE
PREDEVALUATION PREOPERATIVELY PRESERVABILITY PRESERVATORIES PREVARICATIONS
PREVENTABILITY PRIVATISATIONS PRIVATIZATIONS PROVEABILITIES PROVENTRICULAR
PROVERBIALISTS PROVIDENTIALLY PROVINCIALISTS PULVERISATIONS PULVERIZATIONS
QUADRUMVIRATES QUALIFICATIVES QUANTITATIVELY QUANTIVALENCES RADIOACTIVATED
RADIOACTIVATES RADIOSENSITIVE REACTIVENESSES RECAPITULATIVE RECOVERABILITY
RECULTIVATIONS RECURVIROSTRAL REDINTEGRATIVE REFRACTIVENESS REFRACTIVITIES
REGENERATIVELY REHABILITATIVE REINNERVATIONS REINVESTIGATED REINVESTIGATES
REINVIGORATING REINVIGORATION REINVIGORATORS RELATIVENESSES RELATIVISATION
RELATIVIZATION REMOVABILITIES REMUNERATIVELY REPRESENTATIVE RESERVATIONIST
RETRIEVABILITY REVACCINATIONS REVALORISATION REVALORIZATION REVELATIONISTS
REVENDICATIONS REVERBERATIONS REVINDICATIONS REVITALISATION REVITALIZATION
REVIVABILITIES REVIVIFICATION REVOCABILITIES REVOKABILITIES SALVAGEABILITY
SEPARATIVENESS SERONEGATIVITY SERVICEABILITY SEVERABILITIES SIMPLIFICATIVE
SOVIETISATIONS SOVIETIZATIONS SOVIETOLOGICAL SUBSTANTIATIVE SUBSTANTIVALLY
SUBSTANTIVISED SUBSTANTIVISES SUBSTANTIVIZED SUBSTANTIVIZES SUOVETAURILIAS
SUPERELEVATING SUPERELEVATION SUPEREROGATIVE SUPERGRAVITIES SUPEROVULATING
SUPEROVULATION TELEVANGELICAL TELEVANGELISMS TELEVANGELISTS TELEVISIONALLY
TENDOVAGINITIS TERGIVERSATING TERGIVERSATION TERGIVERSATORS TERGIVERSATORY
TETRAVALENCIES TRANSFORMATIVE TRANSITIVENESS TRANSITIVITIES TRANSMIGRATIVE
TRANSMISSIVELY TRANSMISSIVITY TRANSMITTIVITY TRANSVALUATING TRANSVALUATION
TRANSVERSALITY TRANSVESTITISM TRIVIALISATION TRIVIALIZATION TSESAREVITCHES
ULTRACIVILISED ULTRACIVILIZED ULTRAEXCLUSIVE ULTRAEXPENSIVE ULTRASENSITIVE
ULTRAVIOLENCES UNAMBIVALENTLY UNAPPRECIATIVE UNATTRACTIVELY UNAVAILABILITY
UNAVOIDABILITY UNCHAUVINISTIC UNCONVENTIONAL UNCULTIVATABLE UNDERVALUATION
UNIVERSALISTIC UNIVERSALITIES UNIVERSITARIAN UNREMUNERATIVE VACUOLISATIONS
VACUOLIZATIONS VALEDICTORIANS VALETUDINARIAN VALETUDINARIES VANDALISATIONS
VANDALIZATIONS VAPORABILITIES VARIOLISATIONS VARIOLIZATIONS VASOACTIVITIES
VASODILATATION VASODILATATORY VASOINHIBITORS VASOINHIBITORY VECTORISATIONS
VECTORIZATIONS VEGETARIANISMS VEGETATIVENESS VENERABILITIES VENERATIVENESS
VERBALISATIONS VERBALIZATIONS VERBIFICATIONS VERBIGERATIONS VERIDICALITIES
VERMICULATIONS VERNACULARISTS VERNALISATIONS VERNALIZATIONS VERSIFICATIONS
VERTICALNESSES VERTICILLASTER VERTICILLATELY VERTICILLATION VESICULARITIES
VIBROFLOTATION VICTIMISATIONS VICTIMIZATIONS VIDEOCASSETTES VIGILANTNESSES
VILLAGISATIONS VILLAGIZATIONS VILLEGGIATURAS VINDICATRESSES VIRTUALISATION
VIRTUALIZATION VISUALISATIONS VISUALIZATIONS VITALISTICALLY VITATIVENESSES
VITICULTURALLY VITILITIGATING VITILITIGATION VITRIFIABILITY VITRIFICATIONS
VITRIOLISATION VITRIOLIZATION VITUPERATIVELY VOCATIONALISMS VOCATIONALISTS
VOLATILENESSES VOLATILISATION VOLATILIZATION VOLCANISATIONS VOLCANIZATIONS
VOLCANOLOGISTS VOLUMETRICALLY VULCANISATIONS VULCANIZATIONS VULCANOLOGISTS
VULGARISATIONS VULGARIZATIONS VULVOVAGINITIS