12 letters
- immovability28
- incommodious24
- inharmonious20
- intermontane18
- isomorphisms23
- kymographies28
- lachrymosely26
- lachrymosity25
- lemongrasses19
- leukemogenic27
- mademoiselle21
- mammographic31
- mealymouthed25
- memorability24
- memorialised20
- memorialises19
- memorialists19
- memorialized29
- memorializes28
- memorization28
- mesomorphies23
- metamorphism26
- metamorphose23
- mnemonically27
- mobilization29
- mockingbirds29
- moderateness17
- modernnesses18
- modification23
- modishnesses19
- modulability24
- modularities18
- moisturising19
- moisturizers25
- moisturizing28
- molestations17
- molluscicide25
- mollycoddled26
- mollycoddler25
- mollycoddles25
- molybdenites23
- monadelphous24
- monastically23
- monasticisms22
- monetization26
- moneylenders21
- moneymakings28
- mongrelizing31
- monitorships21
- monkeyshines25
- monochromats24
- monochromist24
- monocrystals22
- monocultural23
- monocultures22
- monodisperse20
- monodramatic23
- monofilament24
- monogamously25
- monogrammers24
- monogramming27
- monographing26
- monolinguals22
- monologuists20
- monomaniacal24
- monometallic24
- monomorphism27
- mononuclears22
- mononucleate22
- monophthongs26
- monophyletic27
- monopodially24
- monopolising23
- monopolistic23
- monopolizers29
- monopolizing32
- monorchidism25
- monospecific28
- monosyllabic26
- monosyllable24
- monosynaptic25
- monoterpenes20
- monotheistic21
- monotonicity22
- monotonously21
- monsignorial20
- monumentally25
- moonlighters21
- moonlighting24
- moralization26
- morbidnesses20
- morosenesses16
- morphallaxes29
- morphallaxis29
- morphologies23
- morphologist23
- morphometric26
- mortarboards19
- motherboards21
- motherfucker28
- motherhouses20
- motherliness19
- mothproofers23
- mothproofing26
- motionlessly20
- motivational21
- motivelessly23
- motoneuronal19
- motorboaters18
- motorboating21
- motorcycling27
- motorcyclist24
- motorization25
- mountaineers18
- mountainside19
- mountaintops21
- mountebanked26
- mournfullest23
- mournfulness23
- mousetrapped23
- mouthbreeder22
- movabilities23
- movelessness21
- moviemakings29
- neurohormone20
- neurohumoral21
- nomographies23
- nonemotional19
- nonglamorous21
- nonhemolytic25
- nonmolecular23
- nonmotorized27
- nonunanimous21
- normotensive21
- normothermia21
- normothermic24
- northernmost19
- orismologies18
- osmolalities17
- osmolarities16
- overenamored21
- overmodestly23
- overpromoted23
- overpromotes22
- paedomorphic27
- pandemoniums25
- parathormone21
- parsimonious20
- philharmonic27
- photomontage23
- photomosaics23
- phragmoplast26
- phrasemonger23
- phytohormone25
- plasmodesmas23
- plasmogamies24
- plasmolyzing34
- pleomorphism27
- pneumococcal30
- pneumococcus30
- pneumographs27
- pneumothorax29
- polymorphism29
- polymorphous27
- posthumously25
- premodifying27
- premoistened20
- premonishing24
- premonitions20
- primogenitor21
- primordially23
- promontories19
- pseudomonads22
- pseudomorphs25
- pseudonymous24
- pyromorphite25
- remobilizing31
- remoistening19
- remonetizing28
- remonstrance20
- remonstrants17
- remonstrated17
- remonstrates16
- remonstrator16
- remorsefully23
- remortgaging22
- remotenesses16
- remotivating22
- remotivation20
- removability25
- rhodomontade20
- rodomontades18
- rumormongers22
- sanctimonies20
- scaramouches24
- scaremongers21
- seismographs22
- seismography24
- seismologies18
- seismologist18