SAT Vocabulary
cupidity
greed, strong desire
cursory
brief to the point of being superficial
curt
abruptly and rudely short
curtail
to lessen,reduce
daunting
intimidating,causing one to lose courage
dearth
a lack ,scarcity
debacle
a disastrous failure,disruption
debase
to lower the the quality or esteem of something
debauch
to corrupt by means of sensual pleasures
debunk
to expose the falseness of something
decorous
socially proper,appropriate
decry
to criticize openly
deface
to ruin or injury 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 auhtority
defile
to make unclean,impure
deft
skillful,capable
defunct
no longer used or existing
delegate
to hand over responsibilty for something
deleterious
harmful
delibrate
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
demean
to lower the satus or stature of something
demure
quiet,modest,reserved
denigrate
to belittle ,diminish the opinion of
denounce
to criticize publicly
deplore
to feel or express sorrow,disapproval
depravity
wickedness
deprecate
to belittle,depreciate
derelict
abandoned,run-down
deride
to laugh at mockingly,scorn
derivative
taken directly from surce,unoriginal
desiccated
dried up,dehydrated
desolate
deserted,dreary,lifeless
despondent
feeling depressed,discouraged ,hopeless
despot
one who has total power and rules brutally
destitute
impoverished,utterly lacking
deter
to discourage ,prevent from doing
edevious
not straight forward,deceitful
dialect
a variation of a language
diaphanous
light,airy,transparent
didactic
intended to instruct
diffident
shy,modest,
diffuse
to scatter,thin out,break up
dilatory
tending to delay,causing delay
deligent
showing care in doing one’s work
diminutive 
small,miniature