12 letters
- discontinues19
- dispensation18
- doctrinaires17
- ecclesiastic22
- econometrics22
- ecumenicists23
- electricians20
- enantiomeric20
- encrustation18
- enterobiasis16
- enterococcal23
- enterococcus23
- enterprising19
- enucleations19
- enumerations18
- enunciations19
- epicureanism23
- episcopacies24
- epistolaries16
- evisceration20
- excoriations23
- excruciation27
- excursionist24
- exonerations21
- expansionist24
- exsiccations26
- fornications20
- frontispiece22
- gastroscopic23
- housepainter19
- houseparents19
- iconoclastic23
- iconolatries17
- impersonates19
- impersonator19
- importancies22
- imprecations22
- inaccuracies23
- incarcerates19
- incessancies20
- inchoateness19
- incinerators17
- incorporated20
- incorporates19
- incorporeity21
- incorruption21
- incrustation18
- inculcations22
- inculpations22
- incurvations22
- indirectness18
- inheritances19
- innumeracies21
- inoculations19
- inoperculate21
- inosculation19
- inscriptions20
- insectivores20
- insecurities17
- inseminators17
- insouciances21
- inspectorate19
- inspirations17
- instructions18
- insurgencies20
- insurrection18
- interactions17
- interception20
- interceptors19
- intercession17
- intercessors16
- intercessory18
- intercompare22
- intercoolers17
- intercourses17
- intercrossed17
- intercrosses16
- interfusions18
- interiorises13
- interlinears15
- internalises15
- interneurons16
- internuclear19
- internuncios19
- interoceanic20
- interoceptor19
- interruption18
- intersection17
- intersensory16
- intersession14
- interspacing22
- interspecies19
- interstrains14
- intolerances18
- intrapreneur18
- intraspecies19
- intrauterine15
- intrepidness18
- introversion18
- ironicalness18
- irresolution15
- irresponsive20
- isoprenaline18
- itinerancies17
- kinetoscopes23
- lectionaries17
- liposuctions21
- literariness14
- macropterous22
- mensurations18
- mercurations20
- meretricious19
- microscopies24
- microscopist24
- miscreations19
- mispronounce24
- mountaineers18
- mucoproteins23
- narcolepsies20
- narcoleptics23
- natriuretics17
- necromancers23
- necromancies23
- necropolises20
- neorealistic17
- neurasthenic20
- neuroleptics21
- neuropathies19
- neuropterans18
- neuropterous18
- neuroscience21
- neurosensory17
- neuroticisms20
- neutrinoless16
- nitrogenases16
- nitrosamines17
- nonassertive18
- noncancerous22
- noncorporate20
- noncountries19
- noncustomers21
- nondescripts21
- nonelectrics21
- nonoperative21
- nonparasitic20
- nonpasserine18
- nonrealistic18
- nonsecretors17
- nonsecretory19
- nonsocialist18
- obscurations20
- obstreperous19
- omnipotences23
- omnisciences23
- oncornavirus22
- operationism19
- operationist16
- operatorless16
- ordinariness15
- orientations14
- overcautions21
- overconcerns24
- overissuance21
- overreaction20
- parishioners18
- parsimonious20
- partitioners16
- parturitions17
- pasteurising19
- pasteurizers25
- paternosters16
- pectinaceous23
- pectinations20
- penetrations17
- pensionaries17
- pentazocines29
- percolations20
- percutaneous21
- perennations18
- perestroikas19
- perforations19
- perfusionist20
- periodontics20
- peritrichous21
- persecutions20
- personalties17
- personations17
- personifiers19
- perspiration19
- pertinacious20
- pertinencies20
- phoneticians22
- picornavirus24
- plutocracies23
- poeticalness20
- porcelaneous21
- porterhouses18
- positroniums20
- postulancies21
- practitioner19