13 letters
- cohabitations22
- collaboration22
- collisionally23
- collocational23
- colonisations19
- colonizations28
- colorizations27
- columniations23
- combinational25
- commemoration26
- commendations25
- commiseration23
- commissioners23
- commissioning26
- communication28
- communization34
- companionable28
- companionably30
- companionship29
- companionways29
- compassionate23
- compellations25
- compendiously28
- compensations24
- complexations31
- complications27
- compositional24
- comprehension26
- compressional24
- compurgations26
- computational25
- concatenation22
- concentration22
- concessionary23
- concessioners21
- conciliations22
- conclusionary25
- concretionary23
- condemnations23
- condensations20
- condescension23
- conditionable23
- conditionally23
- confabulation26
- confectionary26
- confectioners24
- confectionery26
- confederation22
- confessionals22
- configuration24
- confirmations24
- confiscations24
- conflagration24
- conformations24
- confrontation22
- conglobations24
- congregations22
- congressional21
- conidiophores23
- conjugational31
- conjunctional33
- connotational20
- conscientious22
- consciousness22
- conscriptions24
- consecrations21
- conservations22
- consideration19
- consignations21
- consociations21
- consolidation20
- conspirations21
- constellation20
- consternation19
- constipations21
- constitutions19
- constrictions21
- constructions22
- consultations20
- consummations25
- contamination22
- contemplation25
- contentiously22
- contestations18
- continuations20
- contortionist18
- contraception24
- contractional22
- contradiction22
- contravention23
- contributions22
- conventioneer23
- conversations22
- conversazione31
- conversazioni31
- convocational26
- convulsionary26
- coordinations19
- copiousnesses21
- coproductions25
- coreligionist20
- cornification24
- correlational19
- corroboration20
- corruptionist21
- counteraction22
- craniometries20
- crenellations20
- creolizations27
- cryobiologies24
- cryobiologist24
- curarizations27
- curiousnesses19
- customization30
- cycloaddition25
- dandification23
- deactivations22
- debilitations19
- decapitations21
- decarbonation22
- decelerations19
- decerebration21
- declinational21
- decommissions24
- decomposition24
- decompression24
- deconditioned21
- decongestions21
- decortication21
- decrepitation21
- deescalations19
- defibrination22
- deflagrations21
- deforestation18
- deformational22
- degenerations18
- deglaciations21
- degranulation20
- deionizations25
- delaminations20
- deleteriously19
- deliberations19
- deliciousness20
- delimitations19
- deliriousness17
- demodulations21
- demolitionist19
- demonizations28
- demonstration19
- demyelination22
- denationalize26
- denaturations17
- denominations20
- densification22
- denticulation21
- denunciations21
- deodorization25
- deoxygenation27
- depopulations23
- depreciations21
- deputizations28
- deracinations19
- derealization25
- deregulations19
- derepressions18
- dermabrasions21
- desalinations17
- desegregation19
- desiderations16
- despoliations19
- desquamations28
- deteriorating17
- deterioration15
- deteriorative18
- determination19
- detoxications25
- deviationisms22
- deviationists19
- deviousnesses20
- devolutionary23
- devolutionist21
- diazotization33
- dieselization25
- diffusionisms25
- diffusionists22
- digitizations26
- digressionary19
- dilapidations20
- dimensionally23
- dimensionless20
- dimerizations27
- directionless19
- disaffections24
- disclamations22
- discoloration19
- disconnection23
- discretionary20
- disfunctional24
- disharmonious21
- disillusioned19