| Term | Definition |
| curt | abruptly and rudely short |
| curtail | to lessen, reduce |
| daunting | initmidating, causing one to lose courage |
| dearth | a lack, scarcity |
| debacle | a disastrous failure, disruption |
| debase | to lower the quality or esteem of something |
| debaunch | to corrupt by means of sensual pleasures |
| debunk | to expose the falseness of something |
| decry | to criticize openly |
| deface | to ruin or injure something's appearance |
| defamatory | harmful toward another's reputation |
| defer | to postpone something; to yield to another's wisdom |
| deferential | showing respect for another's authority |
| defile | to make unclean, impure |
| deft | skillful, capable |
| defunct | no longer used or existing |
| delegate | to hand over responsibility for something |
| deleterious | harmful |
| deliberate | intentional, reflecting careful consideration |
| delineate | to describe, outline, shed light on |
| demagogue | a leader who appeals to a people's prejudices |
| demarcation | the marking of boundaries or categories |
| demure | quiet, modest, reserved |
| demean | to lower the status or stature of something |
| denigrate | to belittle, diminish the opinion of |
| denounce | to criticize publicly |
| deplore | to feel or expresss sorrow, disapproval |
| depravity | wickedness |
| deprecate | to be little, depreciate |
| derelict | abandoned, run-down |
| deride | to laugh at mockingly, scorn |
| derivative | taken directly from a source, unoriginal |
| desecrate | to violate the sacredness of a thing or place |
| desiccated | dried up, dehydrated |
| desolate | deserted, dreary, lifeless |
| despondent | feeling depressed, discouraged, hopeless |
| despot | one who has total power and rules brutally |
| destitute | improverished, utterly lacking |
| deter | to discourage, prevent from doing |
| devious | not straightforward, deceitful |
| dialect | a variation of a language |
| diaphanous | light, airy, transparent |
| didactic | intended to instruct, overly moralistic |
| diffident | shy, quiet, modest |
| diffuse | to scatter, thin out, break up; not concerntrated, scatteredm disorganized |
| dilatory | tending to delay, causing delay |
| diligent | showing care in doing one's work |
| diminutive | small or miniature |
| dirge | a mourngul song, especially for a funeral |