13 letters
- deprecatingly26
- deprogramming28
- desacralizing30
- desegregating21
- desensitizing27
- desexualizing35
- destabilizing30
- desulfurizing32
- deteriorating17
- detribalizing30
- devastatingly24
- diagonalizing30
- dichotomizing34
- dillydallying26
- dingleberries21
- diphthongized34
- diphthongizes33
- disappointing24
- disassembling24
- discomforting26
- discommending28
- disconcerting24
- disconfirming27
- disconnecting25
- discontenting22
- discontinuing23
- disemboweling27
- disenchanting24
- disengagement23
- disentangling22
- disfurnishing24
- disheartening20
- disinheriting20
- disinhibiting23
- disorganizing29
- disparagingly25
- dispossessing20
- dispraisingly23
- disqualifying33
- disquietingly30
- disrespecting23
- dissatisfying22
- disseminating21
- dissimilating21
- dissimulating22
- distinguished21
- distinguishes20
- distractingly23
- distressingly20
- domesticating23
- domiciliating24
- domineeringly24
- doppelgangers26
- easygoingness21
- eavesdropping27
- electrocuting24
- electrolyzing32
- electrotyping25
- emblematizing35
- embranglement27
- encapsulating25
- encouragingly26
- endangerments22
- enfranchising26
- enregistering19
- entanglements22
- equilibrating30
- estrangements20
- etherealizing28
- etymologising24
- etymologizing33
- euthanatizing29
- evangelically28
- everlastingly24
- expectorating29
- experimenting30
- expostulating28
- expropriating29
- exsanguinated26
- exsanguinates25
- extemporising29
- extemporizing38
- exteriorising23
- exteriorizing32
- exterminating27
- externalising25
- externalizing34
- extinguishers26
- extinguishing29
- extrapolating27
- extravagating29
- extravasating27
- familiarising23
- familiarizing32
- fascinatingly26
- fashionmonger25
- faultfindings26
- featheredging24
- feelingnesses21
- fellmongeries24
- fellmongering27
- fellowshiping29
- fianchettoing25
- fiberglassing25
- fictioneering23
- filibustering24
- fingerpicking32
- fingerprinted24
- firefightings26
- fittingnesses20
- flameproofing29
- floodlighting26
- flourishingly26
- flowchartings28
- fluoroscoping27
- foregathering23
- foregrounding24
- foreordaining21
- foreshadowing25
- forgivingness26
- formularizing33
- fractionating23
- fragmentating25
- fragmentizing34
- freethinkings26
- frighteningly27
- frustratingly23
- fungibilities24
- gelandesprung25
- gesticulating23
- gingerbreaded23
- glaringnesses20
- glassblowings26
- glasspapering25
- glycerinating25
- glycosylating27
- gossipmongers24
- gourmandizing33
- grandstanding22
- guesstimating22
- hairdressings19
- hairsplitting22
- hallucinating25
- handwringings26
- hardstandings21
- heartbreaking25
- heartburnings23
- hectographing28
- helicoptering25
- heliographing26
- herringboning25
- hierarchizing32
- historicizing30
- homeschooling27
- hornswoggling27
- horsewhipping29
- hospitalising22
- hospitalizing31
- housebreaking26
- housecleaning24
- housekeepings26
- housetraining20
- housewarmings25
- humiliatingly26
- hydrocracking31
- hydrogenating24
- hydroxylating31
- hyperbolizing36
- hypopharynges30
- hypostatizing32
- hypothecating28
- hypothesizing34
- immortalising23
- immortalizing32
- impersonating23
- impoverishing28
- incarcerating23
- incarnadining23
- incentivizing34
- incongruences25
- incongruently25
- incongruities21
- incongruously25
- incorporating23
- incriminating24
- individuating24
- infantilizing31
- infringements24
- infuriatingly24
- ingeniousness19
- ingenuousness20
- ingratiations17
- ingrownnesses21
- ingurgitating22
- ingurgitation20
- insinuatingly22
- inspiritingly23
- instantiating18
- instrumenting22
- intangibility23