13 letters
- misconception27
- misconnection25
- misdirections21
- miseducations22
- misestimation20
- misevaluation23
- misfunctioned26
- misimpression23
- misperception26
- mispositioned21
- misquotations27
- mitochondrion24
- mobilizations30
- modernisation19
- modernization28
- modifications24
- mollification25
- monetizations27
- moralizations27
- mortification23
- motorizations26
- multibillions24
- multifunction27
- multimillions24
- multinational21
- multiorgasmic26
- multiregional22
- multitrillion21
- mummification30
- mutualization29
- mystification25
- nasalizations25
- nationalising19
- nationalistic19
- nationalities16
- nationalizers25
- nationalizing28
- nazifications30
- nebulizations29
- necessitation18
- nidifications22
- nitrification21
- nonadmissions20
- nonaggression20
- nonantibiotic22
- nonbehavioral25
- nonbiological25
- nonbiologists21
- nonconclusion25
- nonconduction25
- nonconnection24
- noncontagious22
- nondeposition20
- noneducations21
- nonfunctional25
- nongregarious20
- noninclusions22
- noninfectious23
- nonnutritious18
- nonpossession19
- nonregulation20
- nonstationary18
- nonvocational24
- normalization28
- notarizations24
- notifications21
- notionalities16
- novelizations29
- noxiousnesses23
- nullification24
- nutritionally20
- nutritionists16
- objectionable33
- objectionably35
- obliterations18
- obliviousness23
- obnoxiousness26
- obnubilations23
- observational22
- obsessionally21
- obviousnesses22
- octodecillion23
- officiousness24
- operationally21
- operationisms20
- operationists17
- opinionatedly22
- oppositionist20
- opprobriously26
- optimisations20
- optimizations29
- optionalities18
- orchestration19
- organisations17
- organizations26
- orientational16
- ornamentation19
- oscillational20
- ossifications20
- overambitious24
- overassertion18
- overattention19
- overcautioned23
- overconscious25
- overeducation23
- overemotional22
- overexertions25
- overexpansion29
- overextension26
- overinflation23
- overingenious22
- overnutrition20
- overreactions21
- oversecretion21
- overseriously21
- overtaxations25
- overvaluation24
- ovipositional22
- pacifications26
- paleobiologic26
- palletization28
- paralyzations29
- participation23
- partitionists17
- passionflower24
- patriotically23
- patronization27
- pelletization28
- penalizations28
- penuriousness20
- perambulation25
- percussionist21
- peregrination20
- perfectionism26
- perfectionist23
- perfusionists21
- periodicities20
- periodization27
- periodontally22
- periodontists18
- periostitises16
- permutational22
- perpetrations20
- perpetuations21
- perseveration21
- perspicacious26
- perspirations20
- perturbations21
- petrifactions23
- petrification23
- photobiologic27
- photoemission22
- photoionizing31
- photoperiodic25
- photoreaction22
- physiognomies26
- physiographer27
- physiographic30
- physiological27
- physiologists23
- physiotherapy27
- picturization30
- pidginization30
- pigmentations23
- placentations22
- pluralization29
- podsolization28
- podzolization37
- polarizations27
- poliomyelitis23
- pontification24
- postinfection24
- postinjection30
- postisolation18
- postpositions20
- postrecession20
- posttensioned19
- postulational20
- potentiations18
- potentiometer20
- practitioners20
- preadaptation21
- preadmissions21
- prebiological26
- precautionary23
- precautioning24
- precipitation23
- precisionists20
- precognitions23
- precombustion27
- preconception27
- preconditions22
- preconvention26
- preconviction28
- predigestions20
- predilections22
- predomination22
- prefiguration23
- preformations23
- preganglionic26