15 letters
- desacralization30
- desalinizations28
- descriptiveness27
- desensitization27
- desertification23
- desexualization35
- desirablenesses21
- desperatenesses20
- despiritualized31
- despiritualizes30
- dessertspoonful25
- destabilization30
- destitutenesses18
- destructibility26
- destructionists21
- destructiveness25
- destructivities24
- desulfurization32
- desultorinesses19
- detachabilities25
- detectabilities23
- determinateness21
- deterrabilities20
- detoxifications30
- detribalization30
- deuteranomalies22
- deuteranomalous23
- developmentally32
- devitrification27
- dexterousnesses25
- diagonalization30
- dialectological27
- dialectologists23
- diastereoisomer19
- diastrophically28
- dichlorobenzene36
- dichloroethanes25
- dichotomization34
- dichotomousness26
- dictatorialness21
- differentiating26
- differentiation24
- differentnesses24
- diffractometers28
- diffractometric31
- diffusivenesses28
- digestibilities22
- digitalizations29
- dimenhydrinates26
- dinitrobenzenes31
- dinoflagellates25
- diphenhydramine31
- disaccharidases25
- disadvantageous25
- disaffiliations24
- disaggregations23
- disambiguations26
- disappointingly29
- disappointments27
- disapprobations26
- disarrangements23
- disarticulating24
- disarticulation22
- disassociations20
- disciplinarians25
- discombobulated31
- discombobulates30
- disconcertingly29
- disconcertments27
- disconformities26
- disconsolations22
- discontentments25
- discontinuances26
- discontinuation23
- discontinuities22
- discontinuously26
- discountenanced27
- discountenances26
- discouragements26
- discriminations24
- disembarkations27
- disembarrassing25
- disembowelments30
- disenchantingly29
- disenchantments27
- disenfranchised27
- disenfranchises26
- disentanglement25
- disequilibrated31
- disequilibrates30
- disequilibriums34
- disestablishing25
- disfurnishments27
- disgracefulness27
- disgruntlements25
- dishearteningly25
- disheartenments23
- disillusionment24
- disinclinations23
- disinfestations21
- disinflationary24
- disinformations24
- disinheritances23
- disintegrations20
- disinterestedly21
- disintoxicating30
- disintoxication28
- disorganization29
- disorientations18
- disparatenesses20
- dispassionately23
- disposabilities23
- disproportional24
- disproportioned24
- disreputability26
- disrespectfully30
- dissatisfaction23
- dissatisfactory24
- dissimilarities20
- dissolutenesses19
- distastefulness22
- distemperatures23
- distinctiveness25
- distinguishable26
- distinguishably28
- distractibility25
- distressfulness22
- distributorship25
- distrustfulness23
- dithiocarbamate27
- dithyrambically33
- diversification27
- divertissements24
- documentational26
- dolichocephalic34
- dolomitizations30
- domineeringness24
- dorsiventrality24
- dorsoventrality24
- doubtlessnesses22
- downheartedness24
- downrightnesses25
- dramaturgically29
- dreamlessnesses21
- dyslogistically28
- echinodermatous26
- echocardiograms29
- educationalists22
- eggheadednesses24
- electrodeposits23
- electrodialyses23
- electrodialysis23
- electrodialytic26
- electrodynamics29
- electrophoresed25
- endocrinologies24
- endocrinologist24
- endonucleolytic29
- endoparasitisms23
- epichlorohydrin30
- epidemiological29
- epidemiologists25
- eudiometrically27
- exaggeratedness28
- excludabilities32
- expandabilities31
- expeditiousness28
- expendabilities31
- extendabilities28
- extrajudicially40
- extraordinarily27
- extrudabilities28
- fatheadednesses23
- featherbeddings28
- featherstitched26
- federalizations30
- fibrinopeptides29
- foolhardinesses23
- foreordinations21
- foresightedness24
- formidabilities26
- fundamentalisms29
- fundamentalists26
- geohydrologists25
- glucocorticoids29
- glutaraldehydes26
- glyceraldehydes30
- grandiloquences34
- grandiloquently34
- grandiosenesses20
- grandparenthood26
- gynandromorphic33
- halfheartedness25
- haphazardnesses33
- hardheartedness22
- harpsichordists26
- hazardousnesses29
- headmasterships26
- hemagglutinated28
- hemodynamically34