12 letters
- concreteness20
- conditioners18
- confectioner23
- confinements24
- confusedness22
- connectional22
- connectively27
- connectivity26
- containerise17
- containerize26
- continentals19
- contrariness17
- contraveners21
- contriteness17
- copartnering22
- copingstones22
- cornerstones17
- costlinesses17
- cotoneasters16
- countermined22
- countermines21
- counterpanes21
- covertnesses20
- covetousness21
- cowardliness21
- crackbrained27
- craftinesses19
- cragginesses20
- crankinesses21
- cravennesses21
- creakinesses20
- creaminesses19
- creativeness20
- creepinesses19
- crenelations18
- crenellation19
- crispinesses19
- criticalness20
- crumminesses23
- crustinesses17
- culpableness25
- cumbrousness24
- cursednesses18
- cussednesses18
- cyanogeneses21
- cyanogenesis21
- cyanogenetic24
- cybernetical25
- cyclazocines34
- cyclogeneses24
- cyclogenesis24
- cyclohexanes31
- cyclopropane28
- cycloserines22
- cyclosporine25
- cyproterones21
- cytogenetics23
- cytomembrane27
- daintinesses15
- damnableness22
- dappernesses20
- daringnesses17
- deadlinesses16
- debonairness18
- decisiveness21
- decorousness18
- defenestrate17
- definiteness18
- degeneracies19
- degenerately19
- degenerating19
- degeneration17
- degenerative20
- dejectedness27
- delineations16
- delusiveness20
- demagnetized29
- demagnetizer28
- demagnetizes28
- dementedness19
- demimondaine22
- demineralize27
- demonetizing29
- demurenesses18
- denervations19
- depravedness22
- derisiveness18
- deservedness19
- desipramines20
- desirousness15
- desolateness15
- detachedness20
- detailedness16
- determinedly21
- dethronement20
- devilishness21
- devoutnesses19
- diamagnetism22
- dilatoriness15
- dilutenesses16
- directedness18
- directnesses17
- discipliners21
- disconnected22
- discreetness17
- discreteness17
- disheartened17
- dishonesties16
- dismalnesses18
- distinctness18
- divisiveness22
- doggednesses19
- dolorousness16
- dopaminergic25
- doublenesses19
- doubtfulness23
- dovishnesses20
- downwardness22
- doxycyclines32
- draftinesses17
- dreadfulness20
- dreamfulness22
- dreaminesses17
- drearinesses14
- dressinesses14
- drivennesses19
- droughtiness19
- drowsinesses17
- dwarfishness22
- earthinesses15
- earwitnesses16
- ediblenesses18
- educatedness19
- educationese18
- effetenesses19
- effusiveness24
- elatednesses15
- electioneers17
- electiveness21
- enduringness19
- energization25
- engineerings19
- enormousness18
- enshrinement20
- entertainers14
- enthronement20
- entirenesses14
- entrepreneur18
- enviableness22
- epinephrines22
- equestrienne24
- erythrosines17
- ethanolamine20
- etherealness16
- ethylbenzene31
- evanescences24
- eventfulness23
- everydayness22
- exactingness26
- executioners24
- exhibitioner25
- exiguousness24
- exonerations21
- exoticnesses23
- expectedness27
- expertnesses23
- explicitness27
- exponentials25
- extendedness23
- extortioners20
- extramundane26
- extraneously24
- extrauterine21
- eyewitnesses18
- fabulousness22
- facelessness20
- facilenesses20
- factiousness20
- faintishness19
- faithfulness23
- fallownesses21
- familiarness20
- famousnesses20
- fancifulness25
- fatherliness19
- faultinesses18
- fearlessness17
- fearsomeness19
- fecklessness24
- feeblenesses20
- feistinesses16
- femalenesses20
- feminineness21
- fenestration17
- ferrimagnets21
- ferromagnets21
- fervidnesses21
- festooneries16
- feverishness22
- fibronectins23