13 letters
- computerising26
- computerizing35
- comradeliness22
- concanavalins27
- concatenating24
- concentrating24
- concertgoings25
- condescending26
- confabulating28
- confederating24
- conferencings27
- confidingness25
- conflictingly30
- confoundingly29
- conglutinated23
- conglutinates22
- consanguinity24
- consolidating22
- constellating22
- consternating21
- constrainedly22
- containerised19
- containerises18
- containerized28
- containerizes27
- containerless19
- containerport21
- containership23
- contaminating24
- contamination22
- contaminative25
- contaminators21
- contemplating27
- continentally23
- contingencies24
- continuations20
- contradicting24
- controverting24
- conveyancings30
- conveyorising26
- conveyorizing35
- coordinations19
- coprocessings25
- cordwaineries21
- corresponding24
- corroborating22
- corticotropin23
- cosmeticizing34
- coterminously24
- cotransducing25
- countenancing26
- counteracting24
- counterfiring24
- countermining25
- countermoving28
- counterpoints22
- counterposing24
- counterstains19
- countinghouse24
- courtlinesses19
- credentialing22
- criminalities21
- criminalizing33
- criminologies23
- criminologist23
- crisscrossing22
- crossbandings24
- crossbreeding23
- crosschecking31
- crosscuttings23
- crosshatching26
- crotchetiness22
- crumblinesses25
- crunchinesses24
- crystallinity23
- crystallising23
- crystallizing32
- cunnilinguses24
- cunningnesses23
- cursorinesses18
- customariness21
- cyclodextrins31
- cycloolefinic30
- cycloparaffin32
- cyclosporines26
- cylindrically28
- cytochalasins25
- darlingnesses19
- dastardliness17
- daunorubicins24
- decaffeinated25
- decaffeinates24
- decarbonating24
- decarbonizing33
- decarburizing33
- decerebrating23
- dechlorinated22
- dechlorinates21
- declassifying26
- declinational21
- decompressing26
- decontaminate22
- decontrolling23
- decorticating23
- decrepitating23
- decriminalize31
- deemphasizing34
- defibrinating24
- defibrination22
- deformalizing33
- deglamorizing32
- degringolades21
- dehumidifying29
- deinonychuses24
- delaminations20
- delinquencies30
- demagnetizing32
- demandingness23
- demimondaines23
- demineralized29
- demineralizer28
- demineralizes28
- democratizing32
- demonstrating21
- demyelinating24
- demyelination22
- denominations20
- denominatives23
- deoxygenating29
- deprecatingly26
- deprogramming28
- deracinations19
- desacralizing30
- desalinations17
- desegregating21
- desensitizing27
- desexualizing35
- destabilizing30
- desulfurizing32
- desultoriness17
- deteriorating17
- determinacies21
- determinantal20
- determinately21
- determination19
- determinative22
- determinators18
- deterministic21
- detribalizing30
- devastatingly24
- diagonalizing30
- dichotomizing34
- digitoxigenin27
- dillydallying26
- diminishments24
- dingleberries21
- dinitrophenol22
- dinucleotides21
- diphenylamine27
- disappointing24
- disassembling24
- disciplinable26
- discomforting26
- discommending28
- disconcerting24
- disconfirming27
- disconnecting25
- discontenting22
- discontinuing23
- discontinuity22
- discontinuous21
- discriminable25
- discriminably27
- discriminants22
- discriminated22
- discriminates21
- discriminator21
- disemboweling27
- disenchanting24
- disentangling22
- disfurnishing24
- disheartening20
- disincentives23
- disinfectants22
- disinfections22
- disinfestants19
- disinflations20
- disinheriting20
- disinhibiting23
- disinhibition21
- disintegrated18
- disintegrates17
- disintegrator17
- disinterested16
- disinterments19
- disintoxicate25
- disinvestment23
- disorganizing29
- disparagingly25
- dispossessing20