14 letters
- jingoistically33
- johnsongrasses29
- laryngectomees26
- laryngectomies26
- laryngoscopies26
- laughingstocks30
- legitimatizing32
- letterspacings24
- linguistically26
- linguisticians23
- longheadedness23
- longitudinally25
- longsomenesses22
- lymphangiogram33
- malfunctioning30
- manufacturings29
- meaningfulness27
- megasporangium29
- merchandisings27
- merchandizings36
- metalinguistic25
- metamorphosing28
- microinjecting36
- microsporangia26
- misattributing24
- miscalculating29
- mischannelling29
- misclassifying29
- misemphasizing37
- misfunctioning29
- misidentifying27
- mispositioning24
- misprogramming31
- mispronouncing29
- misregistering22
- misremembering29
- mistranslating22
- moneygrubbings32
- mongrelization31
- mountaineering23
- multilingually28
- municipalizing38
- narrowcastings24
- nasopharyngeal26
- newfangledness27
- noncirculating27
- nonconflicting30
- noncontrolling25
- nonengagements25
- nonengineering23
- nonfunctioning28
- nongeometrical25
- nongovernments27
- nongrammatical28
- noninteracting23
- nonoverlapping30
- nonterminating23
- nonthreatening22
- obligingnesses24
- otolaryngology25
- outgoingnesses21
- outmaneuvering27
- outpoliticking29
- outreproducing26
- overbreathings26
- overcautioning26
- overcommitting30
- overconcerning29
- overcorrecting27
- overdecorating25
- overdeveloping30
- overengineered23
- overestimating24
- overexercising31
- overexplaining33
- overexploiting32
- overfulfilling31
- overharvesting27
- overidealizing32
- overimpressing27
- overlengthened26
- overmedicating28
- overnourishing25
- overorganizing33
- overpersuading26
- overpopulating29
- overpoweringly30
- overprocessing27
- overprograming29
- overprotecting27
- overregulating25
- overresponding26
- oversaturating22
- overstretching26
- oversweetening25
- overtightening26
- overwhelmingly33
- pamphleteering29
- paralinguistic25
- parameterizing32
- parenthesizing32
- philosophising28
- philosophizing37
- phosphorescing30
- photocomposing31
- photoengravers26
- photoengraving29
- photofinishing28
- photooxidizing39
- pictorializing33
- playwrightings30
- pleasingnesses22
- politicalizing34
- porcelainizing34
- postganglionic27
- posttensioning22
- prearrangement24
- predesignating24
- predestinating22
- predetermining25
- predischarging28
- prefabricating29
- preformulating28
- preponderating25
- preprogramming31
- preregistering22
- presentencings25
- presterilizing30
- prestructuring25
- prizefightings36
- propagandizing36
- propositioning24
- protolanguages24
- psycholinguist29
- psychologising30
- psychologizing39
- quarterbacking37
- radiolabelling24
- reaccelerating24
- reapportioning24
- rearrangements21
- rearticulating22
- rebroadcasting24
- recapitalizing33
- recapitulating25
- recentrifuging27
- reconditioning23
- reconnoitering22
- reconsecrating24
- reconstituting22
- reconstructing25
- rectangularity24
- redintegrating21
- redistributing22
- reembroidering24
- reencountering23
- reestablishing23
- reexperiencing31
- reflectorizing33
- refrangibility26
- rehabilitating23
- reinterpreting21
- reinterviewing25
- reinvigorating24
- remilitarizing30
- repartitioning21
- repopularizing34
- repressurizing30
- repristinating21
- reprovisioning25
- requisitioning28
- restrengthened21
- resynthesizing31
- retiringnesses18
- retransferring21
- retransforming24
- retransmitting21
- reupholstering24
- revengefulness27
- rumormongering27
- sanguinenesses20
- scandalmongers26
- sectarianizing30
- semiconducting29
- sextuplicating32
- sharpshootings24
- sheepshearings24
- shuttlecocking31
- silversmithing27
- skateboardings25
- sociolinguists22
- somnambulating29
- soothingnesses20
- sophisticating25
- spellbindingly30
- spiritualizing31
- sporangiophore25
- sportscastings23
- sportswritings23
- steamrollering22