| Term | Definition |
| dishearten | discourage |
| disheveled | untidy; marked by an absence of cleaniness and order |
| disinclination | unwillingness |
| disingenuous | lacking genuine candor; insincere |
| disinter | unearth; dig up; To dig up or remove from a grave or tomb; exhume. |
| disinterested | unprejudiced; free of bias and self interest |
| disjointed | lacking coherence; separated |
| disjunction | act or state of separation; disunity |
| dislodge | remove ( forcibly) |
| dismantle | take apart |
| dismember | cut into small parts |
| dismiss | eliminate from consideration; reject |
| disparage | belittle |
| disparate | basically different; unrelated |
| disparity | difference; condition of inequality |
| dispassionate | calm; impartial |
| dispatch | speediness; prompt execution; message sent with all due speed |
| dispel | scatter; drive away; cause to vanish |
| disperse | scatter |
| dispirited | lacking in spirit |
| disport | amuse |
| disputatious | argumentative; fond of arguing |
| disquietude | uneasiness; anxiety |
| disquisition | a formal systematic inquiry; an explanation of the results of a formal inquiry |
| dissection | analysis; cutting apart in order to examine |
| dissemble | disguise; pretend |
| disseminate | distribute; spread; scatter |
| dissent | disagree |
| dissertation | formal essay |
| dissident | dissenting; rebellious |
| dissimulate | pretend; conceal by feigning |
| dissipate | squander; waste; scatter |
| dissolution | disintegration; looseness in morals |
| dissonance | discord; opposite of harmony |
| dissuade | persuade not to do; discourage |
| distant | reserved or aloof; cold in manner |
| distend | expand; swell out |
| distill | purify; refine; concentrate |
| distinction | honor; contrast; discrimination |
| distort | twist out of shape |
| distrait | inattentive; distracted, often by anxiety |
| distraught | upset; distracted by anxiety |
| diurnal | daily |
| diva | operatic singer; prima donna |
| diverge | vary; go in different directions from the same point |
| divergent | differing; deviating |
| diverse | differing in some characteristics; various |
| diversion | act of turning aside; pastime |
| diversity | variety; dissimilitude ( the condition of being dissimilar) |
| divest | strip; deprive |
| divine | perceive intuitively; foresee the future |
| divulge | reveal |
| docile | obedient; easily managed |
| docket | program as for trial; book where such entries are made |
| doctrinaire | unable to compromise about points of a doctrine; dogmatic; unyielding |
| doctrine | teachings in general; particular principles (religious, legal etc.) taught |
| document | provide written evidence |
| doddering | shaky; infirm from old age |
| doff | take off |
| dogged | determined; stubborn |
| doggerel | poor verse |
| dogmatic | opinionated; arbitrary; doctrinal |
| doldrums | blues; listlessness; slack period |
| doleful | mournful; causing sadness |
| dolorous | sorrowful |
| dolt | stupid person; dunce |
| domicile | home |
| domineer | rule over tyrannically |
| don | put on |
| dormant | sleeping; lethargic |
| dormer | window projecting from a roof |
| dorsal | relating to the back of an animal |
| dossier | file of documents on a subject |
| dotage | senility; the condition of deterioration of mental faculties |
| dote | be excessively fond of; show signs of mental decline |
| dour | sullen; stubborn |
| douse | plunge into water; drench; extinguish |
| dowdy | slovenly; untidy |
| downcast | sad; disheartened |
| drab | dull; lacking color; cheerless |
| draconian | extremely severe |
| dregs | sediment; worthless residue |
| drivel | nonsense; foolishness |
| droll | queer and amusing; arousing laughter |
| drone | talk dully; buzz or murmur like bee |
| drudgery | menial work; hard tedious work |
| dubious | questionable; filled with doubt |
| ductile | malleable; flexible; pliable |
| dulcet | sweet sounding |
| dumbfounded | astonish |
| dupe | someone easily fooled |
| duplicity | double dealing; hypocrisy |