- cuprous15
- curious12
- curvaceous22
- curvacious22
- cuscus14
- cutaneous15
- cymous15
- cyprus15
- cysticercus23
- cytomegalovirus31
- dactylus16
- dangerous14
- decapodous19
- deciduous16
- declivitous21
- decorous13
- defocus15
- deinonychus22
- deleterious14
- delicious15
- delirious12
- deltoideus14
- denarius11
- dentulous14
- desirous10
- despiteous15
- detritus10
- deuteranomalous23
- devious13
- dexterous18
- dextrous17
- diadelphous20
- diadromous16
- diamondiferous24
- dianthus13
- diaphanous18
- diathermanous21
- diatomaceous20
- dichogamous23
- dichotomous21
- diclinous16
- dicotyledonous24
- didymous16
- diecious13
- diestrous11
- diestrus10
- digamous15
- dimerous13
- dimorphous20
- dingus11
- dioecious14
- dioicous13
- diplococcus26
- diplodocus20
- dipterous14
- disadvantageous25
- disastrous12
- discontinuous21
- discourteous18
- discus11
- disharmonious21
- disingenuous19
- dispiteous15
- disputatious18
- dissensus12
- dissentious14
- distichous17
- dizygous23
- dolorous11
- doofus11
- drupaceous19
- dubious13
- duplicitous21
- duteous10
- echinococcus28
- echinodermatous26
- echinus14
- echovirus19
- ecrus9
- ecus8
- eczematous26
- edacious13
- edematous14
- edentulous15
- efficacious24
- egregious14
- electrophorus23
- electrotonus18
- elenchus16
- elytrous12
- embolus15
- emeritus12
- emeus9
- emphysematous27
- emulous13
- emus8
- enantiomorphous26
- endogamous18
- endogenous16
- enginous13
- enormous13
- entellus12
- enterococcus23
- enterocoelous19
- enterovirus17
- entomophagous25
- entomophilous24
- envious13
- eohippus17
- ephebus16
- epigeous14
- epigonous16
- epigonus15
- epigynous18
- epiphanous20
- epitheliomatous25
- eponymous19
- eremurus13
- ericaceous17
- erogenous13
- erroneous11
- erythematous20
- esophagus17
- estrous8
- estrus7
- eucalyptus21
- euonymus16
- euphonious18
- euripus12
- eurokous14
- eurythermous21
- evonymus19
- exanthematous27
- excrementitious30
- excursus20
- exiguous19
- eximious19
- exodus15
- exogamous22
- exogenous20
- exophthalmus31
- expeditious23
- extemporaneous29
- extraneous19
- fabulous17
- facetious16
- factious15
- factitious17
- fallacious19
- famous13
- famulus16
- fantabulous21
- farinaceous19
- farraginous18
- fasciculus22
- fashious14
- fastidious15
- fastuous13
- fatuous12
- favus13
- felicitous18
- felonious15
- ferocious16
- ferreous12
- ferriferous18
- ferrous11
- ferruginous19
- fetus9
- feus8
- feverous16
- fibromatous21
- fibrous14
- fichus15
- fictitious17
- ficus12
- filamentous20
- fissiparous18
- fistulous15
- flagitious17
- flambeaus20
- flatus11
- flexuous21
- flirtatious16
- flocculus22
- floccus18
- floriferous19
- flus9
- focus12
- foetus10
- foliaceous18
- folious12
- fondus12
- foraminous18
- fortuitous15
- fossiliferous21
- frabjous24
- fractious16
- fractus14
- fremitus15
- fricandeaus20