despondent.adjective
feeling or showing discouragement, dejection, or depression (despondent about his health); a deep dejection arising from a conviction of the uselessness of further effort 
despondently.adverb
synonyms.despairing, hopeless
despondency.noun
depression of spirits from loss of hope, confidence, or courage; dejection; despair

destitute.adjective
utterly lacking; devoid; lacking resources or the means of subsistence; without things normally necessary for life; impoverished
destituteness.noun

destitution.noun
extreme.want of resources or the means of subsistence; complete poverty; a deprivation or lack; a deficiency; impoverishment

desultory.adjective
lack of method or system, as in jumping from one thing to another; disconnected; not methodical; random
desultorily.adverb
desultoriness.noun

deteriorate, deteriorated, deteriorating, deteriorates.transitive verbs
if something deteriorates, it becomes worse in some way; lower in quality; depreciate; to diminish or impair in quality, character, or value (time and neglect had deteriorated the property)
deterioration.noun
a deteriorated condition
deteriorative.adjective

determine, determined, determining, determines.verbs
transitive use.to decide or settle (a dispute, for example) conclusively; to end or decide, as by judicial action; to establish or ascertain definitely, as after consideration, investigation or calculation; discover; regulate (demand determines production); to give direction to (the management committee determines departmental policy); decide
determine.intransitive verb
to set limits to; define; decide; resolve; to give a definite aim or direction to

determination.noun,.plural.determinations
the resolving of a question by argument or reasoning; the act of deciding definitely and firmly; the result of such an act of decision; the power or habit of deciding; definitely and firmly; a fixing or finding of the position, magnitude, value, or character of something; the act, process, or result of an accurate measurement; the definition of a concept in logic by its essential.constituents; the addition of a differentia to a concept to limit its denotation

determined.adjective
decided or resolved; marked by or showing determination; resolute.(was engaged in a protracted argument)
determinedly.adverb
determinedness.noun

determinism.noun
the doctrine that one's choice of action is not free, but is determined by a sequence of causes independent of his will
determinist.noun
a person who believes in determinism
deterministic.adjective

determinable.adjective
capable of being determined, limited, or fixed (determinable velocities); capable of being settled or decided (matters determinable by common law)
determinableness.noun
determinably.adverb

determinant.adjective
a thing or factor that determines
determinable, determined.adjectives
having one's mind made up

determiner.noun
one that determines
Grammar:.a word belonging to a group of noun modifiers, which include articles, demonstratives, possessive adjectives and words such as any, both or whose and occupying the first position in a noun phrase or the second or third position after another determiner

determinative.adjective
determining or serving to determine

determinate.adjective
conclusively settled; final; firm in purpose; resolute; precisely defined; definite (a determinate number; a determinate distance)
determinately.adverb
determinateness.noun

determinacy.noun
the quality or condition of being determinate; the condition of being determined or characterized

detriment.noun
anything that causes damage or injury; exceedingly harmful; implies obvious harmfulness to something specified (the detrimental effects of excessive drinking and false information) 
detrimental.adjective
causing damage; harmful
detrimentally.adverb
synonym.pernicious

deuterium.noun
deuterium is important to the balance in the universe; the hydrogen-isotope, also known as hydrogen2, having 1 proton and 1 neutron in the nucleus, and having an atomic weight of approximately 2; deuterium occurs when the simplest hydrogen nucleus (a proton) captures the neutron or reacts with another proton; deuterium has an atomic weight of 2.014, double that of ordinary hydrogen

deviant.adjective
differing from a norm or from the accepted standards of a society
deviant.noun,.plural.deviants
one that differs from a norm, especially a person whose behavior and attitudes differ from accepted social standards
deviance.or.deviancy.noun

deviate, deviated, deviating, deviates.verbs
instansitive verb use to turn aside from a correct course; digress; diverge; to depart, as from a norm, a purpose, or a subject; a sexual pervert; stray; swerve
transitive verb use to cause to turn aside or differ
deviate, deviator.nouns
a deviant
deviatory.adjective

deviation.noun,.plural.deviations
divergence; a turning aside; a going away from
deviator.noun
a person or thing that deviates 
synonyms-veer, swerve, diverge, digress
deviant.adjective
differing from a norm or from the accepted higher standards
deviant.noun
something that differs from a norm, especially a person whose behavior and attitudes differ from accepted higher standards
deviance or deviancy.noun

devious.adjective
deviating from the proper course; going astray; crooked; winding; rambling; not straightforward; shifty.(a devious political maneuver); departing from the correct or accepted way; erring (achieved success by devious means); deviating from the straight or direct course; roundabout (a devious route)
deviously.adverb
deviousness.noun
the quality of being deceitful and underhanded; crookedness; being oblique

devoid.adjective
completely lacking; destitute or empty

devotion.noun
ardent, often selfless affection and dedication, as to a person; love

devote, devoted, devoting, devotes.transitive verbs
to give or apply (one's time, attention, or self) entirely to a particular activity, pursuit, cause, or person; dedicated; a spiritual person who is devout; to set apart for a specific purpose or use (land devoted to mining); to set apart by or as if by a vow or solemn act; consecrate
devotement.noun
devoted.adjective
feeling or displaying strong affection or attachment; ardent (a devoted friend); dedicated
devotedly.adverb
devotedness.noun
synonyms-dedicate, consecrate, pledge
devotee.noun,.plural.devotees
one who is ardently devoted to something; an enthusiast or advocate (a devotee of the evolutionary theory); a fervid.adherent of a religion; a votary

dharma.noun
an East Indian Hindu word for the underlying intelligent energy supporting the universe and all within it, and an individual's purpose in life when he is on the path of action growing and engaging in activities that mostly contribute to growth and responsibility (being the caretaker of all in your life) in all aspects of life including service, sharing, compassion and love; in both Hinduism and Buddhism are the basic principles of cosmic or individual existence; divine law; righteousness; conformity to one's duty and nature
dharmic.adjective

diamagnetic.adjective
of or relating to a substance that is repelled by a magnet
diamagnetism.noun

disregard, disregarded, disregarding, disregards.transitive verbs
to pay no attention or heed to; ignore; to treat without proper respect or attentiveness
disregard.noun
lack of thoughtful attention or due regard
disregardful.adjective
disregarder.noun

drone.noun,.plural.drones
a male bee, especially a honeybee, that is characteristically stingless, performs no work and produces no honey, where its only function is to mate with the queen bee; a pilotless aircraft operated by remote control

drone, droned, droning, drones.intransitive verbs
to make a continuous low dull humming sound; to speak in a monotonous tone (the lecturer droned on for hours); to pass or act in a monotonous way
transitive use.to utter in a monotonous low tone
drone.noun
a continuous low humming or buzzing sound

dismantle, dismantled, dismantling, dismantles.transitive verbs
to take apart; disassemble; tear down; to put an end to in a gradual systematic way (dismantling the cumbersome regulations for interstate trucking); to strip of furnishings or equipment (dismantled the house before knocking it down); to strip of covering or clothing
dismantlement.noun

doldrums.noun.plural
a period of stagnation or slump; a period of depression or unhappy listlessness; a region of the ocean near the equator, characterized by calms, light winds, or squalls; the weather conditions characteristic of these regions of the ocean

demarcate, demarcated, demarcating, demarcates.transitive verbs
to set the boundaries of; delimit; to separate clearly as if by boundaries; distinguish (demarcate categories)
demarcation.noun,.plural.demarcations
the setting or marking of boundaries or limits; a separation; a distinction
demarcator.noun,.plural.demarcators

disreputable.adjective
lacking respectability, as in character, behavior or appearance
disreputably.adverb
disreputability.or.disreputableness.noun

disrepute.noun
damage to or loss of reputation; disgrace