English words with 13 letters
Here is a useful set of English words with exactly 13 letters. This is especially handy when you know the answer length in a crossword and want to narrow the field before using pattern search.
internationalconsiderationcircumstancesunderstandingenvironmentalcommunicationapproximatelyinvestigationdeterminationconcentrationmanufacturingestablishmentcorrespondingparticipationdistinguishedsignificantlycomprehensivesubstantiallyappropriationpsychologicaladministratorconsciousnessunfortunatelyextraordinaryeffectivenessmiscellaneousinstitutionalrevolutionarycongressionaldemonstrationtechnologicalphilosophicalcomparativelyautomaticallyconfigurationparliamentarycertificationspecificationaccommodationentertainmentjustificationdevelopmentalauthorizationparticipatingphysiologicalindependentlyprecipitationdocumentationarchitecturalsupplementaryincorporationcollaborationencouragementapproximationconsolidationsophisticateddecompositioncontaminationneighbourhoodqualification