Abnegation :When you no longer want or belief in something or you completely deny use of materilistic things and in order to get rise in spiritual journey or further to get advanced in your journey. 

sentence :Almost all priest practice abnegation of material aspect of human materialistic things. 

Fatuous- stupid or absence of intelligence. Which may cause you trouble later course of time. 

sentence :Few of students ignoring the safety board, the fatuous students continued on their course. 

Aggrandize - To increase the power, money and wealth and status. 

sentence - Due to sanction of grant, the school in a rural area to significantly aggrandize in its development in due course of time. 

Gratuitous : Unwanted or unasked of some situation or things. 

sentence - Suman was criticized for her Gratuitous behavior or  her attitude which have caused lot of trouble to others in the past. 

Iconoclast - one who dont like some ideas or belief. 

Idiosyncratic - Something that is particular to an individual or suitable to one. 

sentence-lakhan sir teaching method was idiosyncratic which no other teacher can copy and his method was very successful in his time. 

Incumbent - A person who is at some responsible official position which has importance in its s field. 

sentence - ram has defeated the incumbent chair person of his society. 

Inveterate - something that is a habit or which one cannot chance easily. 

Sentence :He has an inveterate habit of shouting at kids. 

largesse - when you show kindness or generosity to other person in their difficult time. 

sentence:rahim totally relied on largesse of family members after he lost his job. Which has created lots of trouble for Rahim as every member was trying to maintain distance with him. 

Multifaceted - different and diverse. 

Sentence :Kolkata is a variety of multifaceted tradition and culture and people. 

Obdurate : when you are stubborn and don't want to change your opinion easily even when you realise that you are wrong. 

Sentence - Malik was known for his obdurate nature. Which has made lots of enemies and few friends. 

Pejorative - When you are pejorative you show disapproval to many things comes in your way. 

sentence - While the police was found to be neutral, but the police described the suspect in a pejorative manner. 

pertinacious- when someone is too much stubborn and doesn't give up easily. 

sentence - A pertinacious friend of mine who was so determined to catch and collect snakes that his parents are very much scared of this rediculous collection.