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There are 49 eighteen-letter words containing 2I, O, P, R, T and X

antibioprophylaxisauxiliary␣power␣unitBurali-Forti␣paradoxcarboxydipeptidasecopy-on-write␣proxiescounterexemplifiedcounterexemplifiescounterexpositionsdeoxytylophorininediacetoxyscirpenoldihydroxypteridineexecutive-producing executive␣producingexophthalmic␣goiterexophthalmic␣goitreexplanatory␣fictionextermination␣campsextrahematopoieticextrahepatobiliaryextraphilosophicalextraphysiologicalhydroperoxidationshydroxymaprotilinehypersexualisationhypersexualizationhyperthyroxinaemiahyperthyroxinaemichyperthyroxinemiasinferiority␣complexMorris␣the␣Explainernicotine␣polacrilexoverapproximations over-approximationsparadoxes␣of␣fictionpentacarbon␣dioxidepentaformylgitoxinphotoperoxidationspotassium␣hydroxideProxima␣Centauriansproximate␣principleproximoposteriorlyreprotoxicologicalsuperiority␣complexunderapproximating under-approximatingunderapproximation under-approximationunderexploitationsxerothermic␣periods

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 110 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 14 words
  • Portuguese Wiktionary: 1 word
  • Dutch Wiktionary: 5 words

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