12 letters
- illustrating18
- illustration16
- illustrative19
- illustrators15
- immeasurable23
- immeasurably25
- immensurable24
- immigrations21
- immoderacies22
- immoderately22
- immoderation20
- immoralities19
- imparadising22
- impenetrable23
- impenetrably25
- imperatively25
- imperatorial19
- impetrations19
- imponderable24
- imponderably26
- inaccuracies23
- inaccurately23
- inaugurating20
- inauguration18
- inaugurators17
- incarcerated20
- incarcerates19
- incinerating20
- incineration18
- incinerators17
- incomparable26
- incomparably28
- incorporable23
- incorporated20
- incorporates19
- incorporator19
- ineradicable21
- ineradicably23
- infiltrating20
- infiltration18
- infiltrative21
- infiltrators17
- ingratiating18
- ingratiation16
- ingratiatory17
- ingratitudes17
- innumeracies21
- inseparables20
- inspectorate19
- inspirations17
- instauration15
- insufferable24
- insufferably26
- insurability20
- integrations16
- intemperance23
- intenerating17
- inteneration15
- interactants17
- interactions17
- interallelic19
- intergrading19
- intergrafted19
- interlibrary19
- interstrains14
- interstrands15
- intolerances18
- intolerantly18
- intracardiac20
- intracardial18
- intracompany25
- intracranial18
- intramurally21
- intranasally18
- intransigent17
- intransitive18
- intrapreneur18
- intrapsychic26
- intraspecies19
- intrauterine15
- intravitally21
- invertebrate20
- inveteracies20
- inveterately20
- invigorating22
- invigoration20
- invigorators19
- invulnerable24
- invulnerably26
- irascibility21
- irradiations14
- irrationally17
- irrefragable21
- irrefragably23
- itinerancies17
- itinerations14
- johnsongrass27
- keratinizing29
- keratoplasty22
- keratotomies19
- kymographies28
- laboratories16
- labradorites17
- lateralizing26
- lemongrasses19
- lepidopteran21
- lexicography32
- liberalising20
- liberalistic20
- liberalities17
- liberalizers26
- liberalizing29
- literalistic17
- literalities14
- literalizing26
- literariness14
- literateness14
- lithographed23
- lithographer22
- lithographic25
- litterateurs14
- livetrapping26
- lucubrations22
- lymphography32
- magistracies20
- magistrature18
- magnetograph25
- malpractices25
- mammographic31
- maneuverable25
- maquiladoras27
- marathonings21
- margraviates21
- masqueraders26
- masquerading29
- maturational18
- meliorations17
- melodramatic23
- membranously26
- memorability24
- mensurations18
- mercurations20
- meritocratic21
- mesothoraces20
- mesothoracic23
- mesothoraxes24
- metathoraces20
- metathoracic23
- metathoraxes24
- micrographed26
- micrographic28
- microgravity26
- microprogram26
- milliradians19
- mimeographed26
- mineralising20
- mineralizers26
- mineralizing29
- mineralogies19
- mineralogist19
- ministration17
- miraculously24
- misappraisal22
- misprogramed24
- mistranslate17
- moderateness17
- monocultural23
- monodramatic23
- monogrammers24
- monogramming27
- monographing26
- moralization26
- mousetrapped23
- multilateral19
- multitracked25
- mythographer26
- naprapathies21
- naturalising18
- naturalistic18
- naturalizing27
- neurasthenia17
- neurasthenic20
- neurohumoral21
- neuropterans18
- neutralising18
- neutralistic18
- neutralities15
- neutralizers24
- neutralizing27
- nimbostratus20
- nomographies23
- nonabstracts20
- nonarbitrary19
- noncharacter22
- noncorporate20
- noncoverages23
- nonfederated19
- nongraduates18
- nonimmigrant23
- noninsurance20