14 letters
- counterstained21
- counterstating22
- counterstepped26
- counterstreams22
- counterstrikes23
- counterstrokes23
- countertactics25
- counterterrors19
- counterthreats21
- counterthrusts22
- countervailing27
- counterweights26
- craniocerebral25
- cruciverbalist29
- cruiserweights25
- cryopreserving29
- cryptographers29
- cumbersomeness28
- cyanobacterium30
- cybernetically30
- cyberneticians27
- cyberneticists26
- daguerreotyped24
- daguerreotypes23
- decerebrations22
- defervescences29
- degenerateness19
- deliberateness20
- deliberatively26
- deliverability26
- dematerialized29
- dematerializes28
- demineralizers29
- demineralizing32
- demisemiquaver35
- demultiplexers31
- demythologizer34
- denumerability26
- depersonalized30
- depersonalizes29
- depolymerizing36
- derealizations26
- derisivenesses20
- derivativeness24
- derivatization29
- dermatoglyphic31
- dermatological25
- dermatologists21
- deservednesses21
- deteriorations16
- determinations20
- determinatives23
- determinedness21
- deuteragonists19
- diamondiferous24
- diastereomeric21
- differentiable26
- differentially26
- differentiated23
- differentiates22
- diffractometer27
- disconcertment26
- disencumbering29
- disinheritance22
- disinteresting19
- dismemberments28
- disorderedness18
- disorderliness18
- dispersiveness23
- disremembering27
- dissertational17
- disserviceable26
- distemperature22
- diverticulitis24
- diverticuloses24
- diverticulosis24
- divertissement23
- doublespeakers27
- dumbfoundering31
- editorializers25
- effervescences31
- effervescently31
- electioneerers19
- electioneering22
- electrosurgery23
- electrotherapy25
- electrothermal24
- endarterectomy24
- enterobacteria21
- enterogastrone18
- entertainingly22
- entertainments20
- ephemeralities23
- epigrammatizer34
- ergastoplasmic26
- eroticizations27
- erythroblastic25
- erythropoieses21
- erythropoiesis21
- erythropoietic24
- erythropoietin22
- esterification21
- etherealnesses18
- everydaynesses24
- exasperatingly30
- exothermically33
- experientially29
- experimentally32
- exterminations26
- fashionmongers26
- fatherlinesses21
- featherbedding27
- featherbrained24
- featherweights26
- federalization29
- fellmongerings28
- ferrimagnetism26
- ferroconcretes24
- ferroelectrics24
- ferromagnesian24
- ferromagnetism26
- ferromanganese24
- fertilizations28
- feverishnesses24
- fictioneerings24
- fingerpickings33
- fingerprinting27
- flabbergasting29
- flimflammeries31
- foraminiferans25
- fortunetellers21
- fraternization28
- generalisation19
- generalissimos21
- generalization28
- generationally22
- generousnesses19
- germanizations30
- gerontocracies23
- gerontological24
- gerontologists20
- gerontomorphic28
- gerrymandering26
- gewurztraminer33
- gingerlinesses21
- glossographers24
- glyceraldehyde29
- governmentally29
- governmenteses25
- granddaughters24
- grandfathering26
- greengroceries22
- groundbreakers26
- groundskeepers26
- gyrostabilizer31
- haberdasheries22
- halterbreaking27
- handkerchieves31
- headmastership25
- headquartering30
- hemacytometers27
- hemerocallises24
- hemocytometers27
- heritabilities20
- hermaphrodites25
- hermaphroditic28
- herpetological26
- herpetologists22
- heteroduplexes29
- heterogameties21
- heterokaryoses22
- heterokaryosis22
- heterokaryotic25
- heterologously23
- heteromorphism27
- heterophyllies25
- heterophyllous26
- heteroploidies21
- heterosexually28
- heterothallism23
- heterotrophies21
- heterozygosity31
- hierarchically28
- hieroglyphical30
- homoeroticisms25
- hydroperoxides30
- hydrotherapies24
- hydrothermally28
- hyperacidities25
- hyperaesthesia23
- hyperaesthetic26
- hyperawareness25
- hyperbarically31
- hyperbolically32
- hypercalcemias31
- hypercatalexes32
- hypercatalexis32
- hypercivilized39
- hyperconscious29
- hypercorrectly30