11 letters
- contrariety17
- contrarious16
- contretemps21
- contributor19
- controllers17
- controlment20
- contumacies22
- contumelies20
- cooperating20
- cooperation18
- cooperative21
- cooperators17
- coordinator16
- coparcenary23
- coparceners21
- copartnered19
- coplanarity21
- copolymeric26
- coprincipal25
- copromoters20
- coprophilia23
- copulations20
- copycatting25
- cordilleran18
- corecipient21
- cornucopian23
- cornucopias22
- corollaries16
- coronograph22
- corotations15
- corporality20
- corporately20
- corporation18
- corporatism20
- corporatist17
- corporative21
- corporeally21
- corpulences23
- corpulently23
- correctable21
- corrections18
- correlating18
- correlation16
- correlative19
- corrugation18
- corruptible22
- corruptibly24
- corruptions19
- coruscation19
- cosmetician21
- cosmopolite21
- coterminous19
- cotoneaster15
- cotransport18
- cottonmouth21
- coulometers19
- coulometric22
- councillors21
- counteracts19
- countercoup23
- counterfeit19
- counterfire19
- counterfoil20
- countermemo22
- countermine20
- countermove23
- countermyth23
- counterpane20
- counterpart19
- counterplan21
- counterplay22
- counterplea20
- counterplot20
- counterploy22
- counterpose19
- counterraid17
- countershot18
- counterstep19
- countertops19
- countervail21
- countryseat18
- couplements23
- craniometry20
- crapshooter19
- creationism18
- creationist15
- crematories17
- crematorium21
- crenelation17
- crenellated18
- crenulation18
- crepitating20
- crepitation18
- criminality21
- criminology23
- criticality20
- criticaster17
- crocidolite19
- crocodilian20
- cryotherapy23
- cryptarithm24
- cryptically26
- cryptogamic27
- cryptogenic25
- cryptologic25
- cryptomeria22
- cryptorchid25
- crystalline19
- crystallite18
- ctenophoran21
- ctenophores20
- culmination21
- culpability25
- cultivation21
- cupellation21
- cupronickel27
- curatorship20
- curettement19
- curtailment20
- curvilinear21
- customarily21
- cyclization30
- cyclohexane30
- cyclometers23
- cycloolefin25
- cycloserine21
- cyclothymia27
- cylindrical23
- cyproterone20
- cytochromes24
- cytogenetic22
- cytokinetic24
- cytological23
- cytomegalic25
- cytoplasmic26
- decelerator16
- deceptional20
- decollation18
- decorticate18
- decremental20
- decrepitate18
- delectation17
- delphically25
- demonically23
- denticulate18
- deportation16
- deprecation19
- deprecatory20
- depreciator18
- dereliction17
- deteriorate12
- determinacy21
- determinate16
- deterrently16
- detrimental17
- deuteranope17
- deuteration14
- diaphoretic20
- dichromatic23
- dictionally20
- dilatometer16
- dilatometry18
- dimercaprol22
- directional17
- directorate15
- directorial16
- doctrinaire16
- doctrinally20
- documentary22
- duplication21
- dynamometer21
- ebulliently21
- econometric21
- ectomorphic25
- ectopically24
- ectoplasmic24
- ectothermic22
- ectotrophic22
- ecumenicism25
- ecumenicist22
- ecumenicity24
- editorially16
- eidetically19
- elastomeric18
- electioneer16
- electorally19
- electorates15
- electrician19
- electricity20
- electrocute19
- electroform21
- electrogram20
- electrology20
- electrolyte18
- electrolyze27
- electronics19
- electrotype20
- electuaries16
- elementally20
- elephantine19