Defamation (मानहानि) : Act of injuring another’s reputation by any slanderous communication  

Defame (गाली देना) : To injure one’s reputation 

Defection (भंग) : The abandonment of one’s country and cause  

Delegate (प्रतिनिधि) : To give one’s authority to another 

Demagogue (दुर्जनों का नेता) : A political leader appealing to popular desires and prejudices 

Democracy (जनतंत्र)  : Government of the people, by the people and for the people 

Depraved (भ्रष्ट) : Of very bad morals ; characterized by debasement or degeneration  

Deprecate (अवमानित करना, निन्दा करना) : To feel or express disapproval of something or someone 

Dereliction (कर्तव्य का त्याग) : Failing to discharge one’s duty (willfully) 

Dermatology (त्वचा विज्ञान)  : Medical study of skin and its diseases  

Despotic (निरंकुश) : Not to be moved by entreaty  

Destitute (निराश्रित) : The state of being miserable bereft (deprived of or lacking) of all possessions 

Dexterous (निपुण) : One who is skillful; 

Diagnose (निदान) : Determine the nature of disease  

Diagnosis (रोग की पहचान) : The process of deciding the nature of disease by examination  

Diatribe (अभियोगात्मक भाषण) : Bitter and violent attack in words against someone or something 

Dipsomania (मद्यासक्ति) : Irresistible craving for alcoholic drinks 

Disasters (आपदा) : An event that causes great harm to dams 

Dominion (अधिराज्य) : An area of land that is controlled by a ruler  

Downpour (मूसलधार बारिश) : A heavy continuous fall of rain  

Draw  : A game in which no one wins 

Drought (सूखा) : Dry weather with no rainfall 

Dyke (बांध) : A wall built to prevent the sea or a river from flooding an area 

Dynasty (वंश) : Succession of rulers belonging to one family