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There are 101 eighteen-letter words containing IONI

adenosylmethionineamidopropionic␣acidaminopropionitrileantiadaptationistsantiaggressionistsantiannexationistsanticonceptionistsantidevolutionists anti-devolutionistsantifrustrationismantifrustrationistantipopulationistsantiprogressionistantiprohibitionistantireductionisticantireservationistantirestrictionistantirevolutionistsantisegregationismantisegregationistantivaccinationismantivaccinationist anti-vaccinationistantivivisectionismantivivisectionistarchsegregationistAscension␣Islandersautosuggestionistsautotransfusionistcationic␣detergentscircumlocutionistsclassificationistsconditioning␣housescounterpetitioningcounterrevisionist counter-revisionistcreationist␣orchardday-age␣creationistsdeconstructionismsdeconstructionistsdegree␣of␣ionizationdirection␣indicatordisinformationistsdithionitrobenzeneevolutionisticallyexamination-in-chiefhighest-functioning highest␣functioninghypermethioninemiaignition␣interlocksinformationizationinterpretationistsintrospectionisticintuitionisticallyionization␣energiesionizing␣radiationsisolationisticallymacroevolutionistsmesoionic␣compoundsmethyllanthioninesmicroevolutionistsmidtribulationistsmission␣impossiblesneoimpressionisticneuroreductionismsneuroreductionistsnoncooperationistsnonexhibitionisticnoninterventionismnoninterventionistpaleonutritionistspost-impressionismspostimpressionistsposttribulationismposttribulationistpredestinationistspretribulationistspro-circumcisionistpseudoconditioningquadripartitioningradiation␣impedancerecapitulationistsreconfigurationismreconstructionismsreconstructionistsredistributionistsreductionisticallyrehabilitationistsrepresentationistsrevolutionisationsrevolutionizationsscientifictionistssecessionisticallysemantic␣versioningsocial␣evolutionismsupervaluationiststhionitrobenzoatestransformationistsultraintuitionistsultrarevolutionismultrarevolutionist

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