| Term | Definition |
| decorous | proper |
| decorum | etiquette |
| decry | denounce |
| deface | disfigure |
| defiance | resistance |
| deficient | lacking |
| deficit | shortage |
| defile | soil |
| defunct | dead |
| degenerate | to become worse |
| degradation | disgrace |
| deify | glorify |
| delectable | delicious |
| deleterious | harmful |
| deliberate | done on purpose |
| delineate | draw |
| deluge | flood |
| demagogue | troublemaker |
| demise | death |
| demolish | destory |
| demur | object |
| demure | quiet |
| denigrate | to blacken |
| denounce | decry |
| denuded | uncovered |
| deprecate | disapprove |
| deprivation | removal |
| derelict | abandoned |
| deride | mock |
| derision | mockery |
| derisory | ridiculous |
| derivative | unoriginal |
| derive | extract |
| derogate | disgrace |
| descendant | a person who is related to somebody who lived a long time ago |
| desecrate | dishonor |
| desiccate | dehydrate |
| desolate | empty of people |
| despondent | without hope |
| despot | dictator |
| despotic | of or like a despot |
| desultory | casual |
| deter | prevent |
| deteriorate | decline |
| detest | to hate somebody or something |
| detractor | critic |
| deviate | deflect |
| devious | cunning |
| diabolic | devilish |
| diatribe | tirade |
| dichotomous | divided |
| dictate | command |
| dictator | despot |
| dictatorial | of a dictator |
| didactic | educational |
| diffident | shy |
| diffuse | spread widely |
| dilapidated | old and broken |
| dilatory | slow |
| dilettante | amateur |
| diligent | working hard careful and thorough way |
| diminish | reduce |
| diminutive | small |
| disapprobation | disapproval |
| disassemble | to take apart |
| disavow | deny |
| disavowal | denial |
| discern | make out |
| discernible | able to be discerned |
| disclose | reveal |
| discomfited | confused or embarrassed |
| discord | conflict |
| discordant | conflicting |
| discount | ignore |
| discredit | disgrace |
| discreet | careful |
| discrepancy | difference |
| discrete | separate |
| discretion | caution |
| discriminating | selective |
| discursive | circuitous |
| disdain | haughtiness |
| disgruntled | dissatisfied |
| dishearten | discourage |
| disheveled | untidy |
| disingenuous | insincere |
| disinterest | unconcern |
| disjointed | detached |
| dislodge | remove |
| dismay | alarm |
| disorderly | chaotic |
| disparage | mock |
| disparate | various |
| disparity | unevenness |
| dispassionate | unemotional |
| dispel | expel |
| disperse | scatter |
| disposition | nature |
| disquieting | alarming |
| dissect | examine |
| dissemble | pretend |
| disseminate | scatter |
| dissension | disagreement |
| dissipate | vanish |
| dissolve | vanish |
| dissonance | disagreement |
| distaste | dislike |
| distension | swollenness |
| distinctive | differentiative |
| distort | warp |
| divergent | separate |
| diversion | deviation |
| divisive | alienating |
| divulge | betray |
| docile | easily managed or handled |
| doctrinaire | dogmatic |
| doctrine | dogma |
| dogma | doctrine |
| dogmatic | doctrinaire |
| dolt | idiot |
| domesticated | tamed |
| doting | indulgent |
| drab | boring |
| drastic | fierce |
| drawback | disadvantage |
| dread | scare |
| drench | soak |
| droll | funny |
| drudgery | hard work |
| dubious | suspicious |
| dumbfounded | astonished |
| dupe | trick |
| duplicate | twin |
| duplicitous | deceitful |
| durability | endurance |
| earnest | serious |
| ebb | decrease |
| ebullience | excitement |
| eccentric | abnormal |
| eclectic | varied |
| efface | erase |
| effervescence | vivaciousness |
| effervescent | vivacious |
| efficacious | effective |
| effrontery | rudeness without shame |
| effusive | profuse |
| ealitarian | equal |
| eocentric | self-centered |
| egotistical | of or like an egotist |
| egregious | shocking |
| elated | euphoric |
| elation | delight |
| elitist | high-brow |
| elocution | delivery |
| elucidate | explain |
| elucidation | explanation |
| emaciated | thin |
| emancipate | free |
| emancipation | freedom |
| emasculate | castrate |
| embellish | decorate |
| embittered | bitter |
| embodiment | personification |
| embody | symbolize |