11 letters
- continuance21
- continuator17
- contractile19
- contracting21
- contraction19
- contractive22
- contractual20
- contracture19
- contraption19
- contritions16
- contrivance23
- controlment20
- conurbation20
- conventicle24
- cooperating20
- cooperation18
- cooperative21
- coplanarity21
- coprincipal25
- copulations20
- corecipient21
- cornucopian23
- cornucopias22
- corpulences23
- correlation16
- coruscation19
- cotoneaster15
- coulometric22
- countenance21
- counteracts19
- countercoup23
- counterfeit19
- counterfoil20
- counterions17
- countermine20
- counterpane20
- counterpart19
- counterplan21
- counterplay22
- counterplea20
- counterplot20
- counterploy22
- counterpose19
- counterstep19
- countertops19
- countervail21
- covariation19
- creatinines16
- creationist15
- crenelation17
- crenulation18
- crepitating20
- crepitation18
- crocidolite19
- crocodilian20
- ctenophoran21
- culinarians18
- culmination21
- cultivation21
- cunctations20
- cupellation21
- cupronickel27
- curtailment20
- cyclization30
- decantation17
- decapitator18
- deceptional20
- declaration17
- declination18
- decorticate18
- delectation17
- delineation15
- denticulate18
- deportation16
- deprecation19
- dereliction17
- deuteration14
- dictatorial16
- directional17
- duplication21
- econometric21
- ectotrophic22
- educational18
- ejaculation26
- elaboration16
- electrician19
- electricity20
- electrocute19
- electronics19
- elicitation16
- elucidation18
- elutriating16
- elutriation14
- emancipator21
- enamoration16
- encapsulate20
- entablature17
- enterococci21
- enterotoxin20
- enucleating20
- enucleation18
- enumeration17
- enunciation18
- enunciators17
- epicuticles22
- epithetical20
- equicaloric28
- equinoctial26
- eradication16
- erotization21
- eructations16
- etiolations13
- euthanatize24
- evaporation19
- exceptional26
- excoriation22
- exculpation27
- executorial23
- exoneration20
- expatiation22
- expectation25
- expectorant25
- explanation24
- explication26
- exploration23
- exponential24
- exportation22
- extenuation21
- extirpation22
- extrapolate22
- extrication22
- facilitator18
- felicitator18
- fetoprotein18
- fornication19
- fractionate18
- geanticline19
- geotectonic20
- glauconitic22
- granulation17
- gratulation16
- heliotropic20
- heterotopic19
- impartation18
- impertinent19
- impetration18
- importation18
- importunate19
- impractical24
- imprecation21
- inauthentic19
- incalescent20
- incantation17
- incantatory18
- incarcerate18
- incarnation17
- incertitude17
- incinerated17
- incinerates16
- incinerator16
- incoercible22
- incompetent22
- incompliant23
- incorporate18
- incorporeal19
- incremental20
- inculcating23
- inculcation21
- inculcators20
- inculpating23
- inculpation21
- inculpatory22
- incurvation21
- infatuation17
- inferential17
- inheritance18
- inoculating20
- inoculation18
- inoculative21
- inoculators17
- inoperative19
- inopportune20
- insertional14
- insouciance20
- instinctual18
- instruction17
- integration15
- intentional15
- interactant16
- interacting18
- interaction16
- interactive19
- interannual16
- interatomic18
- intercalate16
- intercensal17
- interceptor18
- intercooler16
- intercostal16
- intercounty19